Rates by Tugboat Size: What Operators Usually Charge (and How “Size” Is Actually Priced)

  

Key Topics Covered in This Article

• How tugboat size impacts pricing structures
• Horsepower-based vs vessel-length billing models
• Rate differences across small, medium, and large tugs
• Harbor vs escort vs ocean tug cost scaling
• Market factors influencing tugboat pricing by size

When people ask for tugboat rates “by size,” they are usually picturing length (e.g., 70-foot vs. 120-foot tug). In actual port and towing billing, size is priced indirectly through the performance metrics that matter operationally:

• Horsepower (HP) – a convenient proxy for capability and fuel burn

• Bollard pull (metric tons or short tons) – the most direct proxy for pushing/towing force

• Propulsion type tied to size class – conventional vs. tractor/ASD often correlates with larger, higher-performance tugs

Because of that, the best way to understand “rates by tug size” is to look at tariff structures that explicitly tier rates by HP or bollard pull, then translate those tiers into the “small / mid / large” language customers use.

Below is a practical guide to the most common size bands and the hourly rate patterns they produce, with published examples from multiple markets.

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1) How tug “size” breaks down in the real world

Small tugs (roughly under ~3,000 HP)

Typical roles:

• Line handling, light harbor moves, small barge shifts, standby work

• Assisting smaller vessels or working in smaller ports with less demanding matrices

What tends to be true:

• You are buying availability and local handling, not maximum power.

• Hourly rates vary dramatically by market and minimum-hour rules.

Mid-size ship-assist tugs (roughly ~3,000–7,900 HP)

This is the “mainstream modern harbor tug” power band in many regions:

• Strong enough for a large share of docking/undocking and terminal work

• Often tractor/ASD designs, depending on port

A key point: some ports and operators explicitly price this band as the “standard tractor tug” class.

Large tugs (roughly 7,900+ HP) and high-bollard assets

Large tugs are priced as premium assets because they:

• Meet higher pilot matrices for larger ships

• Reduce risk in wind/current

• Perform escort duties more credibly

In tariffs, this often shows up as:

• A higher HP tier rate, and/or

• A bollard pull surcharge when a high-capability tug is required.

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2) Common hourly pricing model: “HP-tiered tractor tug rates”

One of the clearest public examples of “rates by size” is a rate sheet that explicitly tiers hourly tractor tug rates by horsepower.

Example: Puget Sound (Foss) – hourly rates by horsepower

Foss’s Puget Sound schedule lists hourly rates per tug with a 1-hour minimum, explicitly tiered by HP:

• 3,000 HP to 7,899 HP: $3,115 per hour

• Greater than 7,900 HP: $4,375 per hour

This is a textbook demonstration of how “size” prices: the larger horsepower class carries a material premium on an hourly basis.

What to take away

• Moving from “mid-size” to “large” (by HP) can add ~40%+ to the hourly rate in a published schedule, before any surcharges, delays, or after-hours premiums. 

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3) Another common model: “bollard pull tiers” within tractor tug pricing

In many industrial ports, “size” is priced as bollard pull, not HP. This is especially common where pilot matrices specify bollard pull thresholds.

Example: Houston-area tariffs – bollard pull cutoffs

Suderman & Young’s published tariff structure shows how tractor tug hourly pricing changes with bollard pull:

• Base hourly charges referenced in the tariff are $1,893/hour, but when a tractor tug is required/requested:

  • $2,519/hour if tractor tug bollard pull is less than 95 metric tons

  • $2,839/hour if tractor tug bollard pull is 95 metric tons or more

That is “rates by tug size” in operational terms: a higher bollard pull class commands a higher hourly rate.

Why bollard pull pricing is so common

Because bollard pull is what pilots and terminals care about when they ask:

• “Do we meet the matrix for this ship at this berth in these conditions?”

• “Do we have enough margin if the vessel loses propulsion or the wind spikes?”

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4) Smaller-market and “light” tug pricing looks very different

Not every port is a major ship-assist complex. In smaller markets, the hourly numbers can be much lower—especially for conventional tugs.

Example: Grays Harbor – conventional vs. tractor hourly

The Port of Grays Harbor tariff provides a simple comparison:

• $475/hour per conventional tug

• $950/hour per tug for ship-assist service (tractor/assist tug) 

Even here, “size/capability” still drives price: the more capable ship-assist tug rate is roughly double the conventional tug rate. 

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5) Large and high-capability tugs are often priced via surcharges, not just higher base rates

In the highest-capability bands, many operators do not publish a totally separate “mega-tug hourly rate.” Instead, they apply a multiplier or surcharge when a high bollard pull tug is required.

Example: New York – high bollard pull surcharge

McAllister’s New York tariff states that if a tug with bollard pull exceeding 60 metric tons is specifically requested or required, a 50% surcharge applies to the docking/undocking rate per tug, in addition to the standard rate. 

Example: Los Angeles/Long Beach – 90-metric-ton surcharge

Crowley’s LA/LB rate sheet notes that if a 90 metric ton bollard pull (or higher) assist tug is required/ordered by the pilot, a 50% surcharge applies. 

What this means in practice

If your “standard” tug hourly is in the $2,500–$3,100 range in a major market, a 50% bollard pull surcharge effectively pushes the all-in rate for that tug into a materially higher bracket—without needing a separate published base rate for the highest class.

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6) A usable “rate-by-size” cheat sheet (what people generally mean)

Because each port’s tariff and minimums differ, it is better to present rates as bands with published anchors, rather than pretending there’s one national average.

Small tugs (often < ~3,000 HP, lower bollard pull)

• Smaller-market conventional tug example: $475/hour

• Many ports won’t show explicit HP tiers for the smallest class; they may just publish “conventional” hourly.

Common reality: small tugs are often priced lower per hour, but minimums and travel time can dominate the invoice.

Mid-size harbor/tractor tugs (~3,000–7,900 HP)

• Published HP-tier example: $3,115/hour for 3,000–7,899 HP tractor tugs (Puget Sound). 

• Published bollard pull example (tractor, <95t): $2,519/hour (Houston-area tariff). 

Common reality: this band is the “default modern ship-assist tug” in many places.

Large tugs (7,900+ HP / high bollard pull)

• Published HP-tier example: $4,375/hour for >7,900 HP tractor tugs (Puget Sound). 

• Published bollard pull example (tractor, ≥95t): $2,839/hour (Houston-area tariff). 

• High bollard pull surcharges: +50% in New York for >60t, and +50% in LA/LB for ≥90t. 

Common reality: large/high-bollard assets are priced as risk-reduction tools and are often the scarcest capacity in the market.

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7) Two points that matter more than “size” when estimating the invoice

A) Minimum hours and billing increments often matter more than the posted hourly rate

Many schedules impose:

• 1-hour, 2-hour, or longer minimums

• billing in 15-minute, 30-minute, or 5-minute increments

So a “cheap hourly” tug can still produce a meaningful bill if the minimum is long or if running time to/from the station is included.

B) Job type can move the rate tier even for the same tug

The same “large” tug may bill at different effective hourly levels depending on:

• standard assist vs. escort vs. emergency/dead-ship categories

• whether a surcharge is triggered by the pilot matrix or competent authority

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Bottom line

“Tug rates by size” are best understood as rates by horsepower and bollard pull class, not length. In published schedules, moving from mid-size to large horsepower bands can increase hourly rates substantially (for example, $3,115/hr to $4,375/hr in one Puget Sound schedule), and high bollard pull requirements frequently trigger 50% surcharges in major ports. 

Hourly Rates Charged by Tugboat Type: What the Market Typically Looks Like (With Tariff Examples)

Key Topics Covered in This Article

• Hourly tugboat rate structures by vessel type
• Harbor, escort, and ocean tug pricing differences
• Factors influencing tug service hourly costs
• Port tariff systems and contract variations
• Real-world examples of tugboat hourly charges

  

Hourly tug rates are not set by “what the boat is called” so much as by capability, risk, and availability. In most U.S. ports, hourly pricing is published in some form of tariff/rate schedule (or embedded in a schedule of rates attached to a master service agreement). Those tariffs then differentiate pricing by tug type through:

• Propulsion/maneuverability class (conventional vs. tractor/ASD)

• Bollard pull/capability (standard vs. high-bollard escort assets)

• Service category (routine assist vs. escort vs. emergency “rig rate”)

• Time rules (minimum hours, increments, standby/detention)

What follows is a practical, operator-facing breakdown of typical hourly rates by tug type, anchored in published rate schedules across multiple ports.

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1) Conventional Harbor Tugs (Conventional Twin-Screw or Standard Harbor Assist)

What “conventional” typically means

Conventional harbor tugs are the workhorses for routine docking/undocking, shifting, and short harbor moves. They generally have lower maneuverability than tractor/ASD designs and typically price below those classes when tariffs explicitly separate types.

Typical hourly rate range (per tug)

Across published tariffs, conventional tug hourly rates commonly land in the mid-three figures to the high-$1,000s per hour, depending heavily on port size and cost structure.

Published examples

• Port Canaveral (Florida) shows $1,350 per hour per tug for hourly work (with minimums and incremental billing). 

• A Houston-area tariff (Suderman & Young) lists routine tug services at $1,893 per hour (nearest half hour) after an included free-time period. 

• Bay Houston Tariff (May 2024) explicitly lists $1,893 as the hourly rate for conventional tugs. 

• Port of Grays Harbor (Washington) lists $475 per hour per conventional tug for ship-assist services beyond included time (a useful example of a smaller-market tariff). 

Why the spread is so wide

Conventional tug hourly rates move materially based on:

• local labor and operating costs

• congestion and required response time

• minimum-hour rules and billing increments (5 minutes vs. 30 minutes changes the effective cost)

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2) Tractor Tugs (ASD/Tractor/VSP in “High-Maneuverability” Service)

What “tractor” means in tariffs

In many tariffs, “tractor tug” is used as a pricing proxy for high-maneuverability ship-assist assets (which may be Voith tractor tugs or azimuthing designs used in tractor-like roles). The consistent commercial reality is that tractor-class assets price above conventional because they deliver more control and can reduce operational risk in tight quarters.

Typical hourly rate range (per tug)

Across published schedules that separate tractor vs. conventional, tractor tug hourly rates commonly fall in the ~$950–$2,600 per hour band per tug, with higher rates in major ports.

Published examples

• Moran (Philadelphia) states that additional services are $1,705 per hour per tug, but if a tractor tug is requested or required the applicable rate becomes $2,557 per hour. 

• Suderman & Young’s Houston-area tariff references tractor tugs at $2,519 per hour in certain contexts (e.g., “Freeport” additional tugs). 

• Bay Houston Tariff (May 2024) lists $2,519 per hour for tractor tugs (with a bollard pull qualifier). 

• Port of Grays Harbor lists $950 per hour per tug for ship assist services provided by a tractor tug (again reflecting a smaller-market rate structure). 

What you are really paying for

Tariffs typically price “tractor” above “conventional” because tractor-class assets:

• deliver higher effective thrust vectoring and control

• reduce risk in wind/current or tight berth geometry

• can often achieve the same outcome with fewer “tries” (less time exposed to incident risk)

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3) Escort-Capable / High-Performance Ship Assist Tugs (Premium Hourly Pricing)

What this category is

These are tugs hired for escort and higher-risk shiphandling roles (often tanker escort, constrained waterways, or terminals with stringent matrices). Pricing is commonly premium because the tug is not merely assisting at the berth—it is part of a risk-control system.

Typical hourly rate range (per tug)

In major port complexes, published escort rates often land in the ~$2,500–$3,300+ per hour per tug range, sometimes with minimums and fuel surcharges.

Published example

• Crowley’s Los Angeles/Long Beach ship assist and escort rate sheet lists Escort Rates per Tug for Vessels Under Power at $3,243 per hour per tug with a one-hour minimum. 

Practical interpretation

This “escort premium” is usually driven by:

• higher bollard pull and escort performance requirements

• specialized winches/towpoints and procedures

• higher readiness expectations (dispatch priority, redundancy, crew experience)

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4) High Bollard Pull Tugs (Surcharged Capability in Some Tariffs)

How tariffs handle high bollard pull

Some operators do not list a separate “high bollard pull hourly rate.” Instead they apply a multiplier or surchargewhen a tug meeting a defined bollard pull threshold is specifically requested or required.

Published example

• McAllister (Baltimore tariff, 2025) states that if a high bollard pull tug (≥75 metric tons) is requested or required, a surcharge of two times any applicable rate(s) per tug applies. 

What this means commercially

If your baseline harbor tug rate is, for example, $1,700–$2,000/hr in a given port, a “2x” rule turns that into a $3,400–$4,000/hr-equivalent outcome for the high-bollard asset—before fuel surcharges or premiums. The key point is that capability often prices as a multiplier rather than a totally separate tariff line.

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5) Emergency / Dead-Ship / Aground Work (“Rig Rate” Hourly)

What this category includes

Emergency towing and incident response work typically triggers a higher rate class because:

• the job risk is higher

• the tug may be operating outside normal assist patterns

• exposure to liability and equipment strain increases

Typical hourly rate range (per tug)

Published tariffs frequently show emergency/rig rates in the ~$2,800–$3,300+ per hour range per tug in certain markets.

Published example

• Suderman & Young’s tariff lists $3,265 per hour for “pulling a vessel aground and for dead ship moves,” and also lists a harbor rig rate at $3,265 per hour. 

Why emergency pricing is structured this way

Emergency work also tends to be paired with:

• minimum-hour rules

• rapid dispatch expectations

• “unusual conditions” provisions that allow additional pricing if conditions exceed normal assumptions

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6) Standby / Detention Hourly (Often Charged the Same as the Tug’s Hourly Rate)

A common point of confusion is that “standby” is not cheap. Many schedules treat standby/detention as fully billable tug time once free-time allowances are exceeded.

Published examples

• Moran’s Miami schedule of rates charges waiting time/delay beyond included time at $2,175 per tug per hour, pro-rated. 

• Port Canaveral schedule notes that standby is charged at the tug’s hourly rate (with minimums), and lists the hourly rate at $1,350 per hour. 

Operationally, this is why vessel readiness (lines, pilots, berth availability) directly impacts tug invoices.

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7) A practical “rate by tug type” snapshot

Below is a consolidated view of published hourly numbers (each is “per tug” unless noted). Treat this as market examples, not universal pricing:

• Conventional harbor tug: ~$475/hr (small port) to ~$1,893/hr (large/industrial port examples) 

• Tractor tug: ~$950/hr (small port) to ~$2,557/hr (major port example) 

• Escort tug (premium escort rate): ~$3,243/hr in a major West Coast complex example 

• Emergency/dead ship (“rig rate”): ~$3,265/hr example 

• High bollard pull surcharge: up to 2x applicable base rates in at least one published tariff 

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8) The key takeaway: “tug type” is really shorthand for capability and risk

If you want the most accurate framing for readers, it is this:

1. Conventional tugs generally sit at the base hourly tier.

2. Tractor/ASD tugs price higher because maneuverability and control reduce risk.

3. Escort-capable and high-bollard assets price at a premium or via multipliers because they are safety-critical.

4. Emergency work typically triggers a separate “rig rate” tier.

How Much Tugboats Usually Charge by Job Type (with Real-World Tariff Examples)

  

Key Topics Covered in This Article

• Tugboat pricing models and billing structures
• Harbor assist vs coastal and offshore towing rates
• Factors affecting tugboat job costs
• Hourly vs flat-rate marine towage tariffs
• Real-world examples of tug service pricing

Tug pricing is highly location- and job-specific, but it is not arbitrary. Most tug services price off a small set of commercial models: per-move, hourly with minimums, per-transit escort, voyage lump sum, or time-charter day rate—often layered with fuel surcharges, after-hours premiums, and “unusual conditions” adders.

Below are the typical charge ranges you’ll see for each job category, plus published tariff examples so your article is anchored in real numbers (not guesses). Where the market is less transparent (especially for towage charters and government work), I use publicly available contracts and rate sheets as reference points.

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1) Port/terminal ship-assist arranged through agents and port tariffs

How it’s usually billed

• Per tug, per hour (common in some ports), or

• Per tug, per service (per move) up to a set time window (often 2 hours), then hourly thereafter, or

• Tonnage-based docking/undocking formulas (common in some ports)

What it usually costs

For mainstream U.S. ship-assist work (dock/undock/shift) you’ll often see:

• ~$1,300–$3,500+ per tug-hour depending on port, tug class, congestion, and time of day, plus fuel surcharges and premiums.

Published examples

• Port Canaveral rate schedule shows $1,350 per hour per tug (5-minute increments), with a 3-hour minimumfor certain hourly work. 

• Port of Miami schedule (Moran) shows docking/undocking for cargo vessels as $0.63 per NRT (includes up to two tugs, with a minimum tonnage charge), plus detention billed at $2,175 per tug-hour beyond included waiting time. 

• A Crowley Los Angeles/Long Beach rate sheet explicitly states assist/escort rates are calculated per tug; it lists escort at $3,243 per hour per tug with a one-hour minimum (useful as a high-activity port reference point). 

Practical “per job” framing

Because ship-assist commonly uses 2–3 tugs for larger ships (and sometimes more under pilot/terminal matrices), total invoice amounts for a single docking/undocking event commonly land in the mid four figures to low five figures, especially once you add:

• after-hours/holiday premiums (often +35% in published schedules), 

• fuel surcharges, 

• and delay/detention if the ship or berth isn’t ready. 

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2) Scheduled towage charters for barges and projects (voyage, time, or project-based)

This is the category where pricing is least transparent publicly, because many tows are priced under negotiated MSAs, project contracts, or brokered deals.

How it’s usually billed

1. Voyage / lump sum tow: a price for Point A → Point B, with defined weather windows, tow speed assumptions, and laytime/standby rules.

2. Time charter (day rate): a daily hire for a defined period; charterer often pays voyage expenses (especially fuel) depending on the form.

3. Project charter: a hybrid—day rate plus standby rules, mobilization/demobilization, and “scope creep” language for changing jobsite conditions.

What it usually costs

For a rough “market reality” band, you’ll see small-to-mid tug charters commonly priced in the high four figures to mid five figures per day, plus fuel and mobilization where applicable—heavily dependent on horsepower class, crew requirements, and geography.

Public reference points (examples, not universal averages)

• Foss published charter pricing (US West Coast packet) shows a tractor tug at $12,295 per day + fuel at burn rate, and $9,000 per half-day + fuel, with an hourly reference of $2,035/hr + fuel for certain call-outs/standby. 

• A publicly filed “Standing Time Charter” on the SEC site states hire for a tug/barge unit at $13,600 per day. 

• Another SEC-filed exhibit references a cap of $9,625 per day for the tug during a proving period (contract-specific, but useful as a real-world anchor that tug day rates can sit in that band). 

What drives the spread

Towage pricing is highly sensitive to:

• Route exposure (protected vs. offshore), weather risk, and tow duration

• Required winch/gear (render-recovery, towing pins, towing brackets)

• Crew rotation, union rules, and local labor

• Mobilization distance (a “cheap day rate” becomes expensive if you’re paying multiple days of repositioning)

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3) Shipyard support work billed hourly with minimums

Shipyard work is often “time and materials” in spirit: unpredictable delays, shifting schedules, and tight maneuvering.

How it’s usually billed

• Hourly rate per tug, with a minimum charge (often 2–4 hours), plus premiums for after-hours/holidays.

What it usually costs

Common published ranges cluster around:

• ~$1,350–$2,500+ per tug-hour in many U.S. ports, with minimums.

Published examples

• Port Canaveral: $1,350 per tug-hour, 3-hour minimum for certain hourly work. 

• McAllister Port Everglades tariff (Dec 2025): $2,070 per tug-hour, with a 4-hour minimum for tug services not defined as docking/undocking. 

• Suderman & Young tariff shows hourly charges of $1,893 per hour (rounded to nearest half hour), and explicitly lists higher hourly pricing for more demanding work (see emergency section below). 

Typical adders

Shipyard work frequently includes:

• standby/delay billing (sometimes after a short free period), 

• cancellation charges once dispatched, 

• and overtime/holiday multipliers (often +35%). 

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4) Escort and risk-management contracts tied to terminal rules and safety compliance

Escort tugs are hired not just to “assist,” but to provide control and safety margins during transits—especially for tankers, gas carriers, and high-consequence waterways.

How it’s usually billed

• Per tug per hour for escorting, or

• Per tug per transit/service, often with a minimum time window.

What it usually costs

Escort work often prices above standard assist because it ties up higher-capability assets and carries more compliance overhead. In many ports, it commonly lands in:

• ~$2,500–$3,500+ per tug-hour (and can go higher depending on local requirements).

Published examples

• Crowley LALB rate sheet lists Escort Rates: $3,243 per hour per tug, one-hour minimum. 

• Suderman & Young tariff lists escorting/assisting vessels in certain Texas ports at $2,519 per hour (nearest half hour). 

• McAllister New York tariff includes a “High Bollard Pull Tug” surcharge of 50% when >60 metric tons bollard pull is requested or required—illustrating how capability requirements directly raise price. 

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5) Emergency call-outs for disabled vessels and incident response

Emergency work is priced around three realities: mobilization speed, risk, and asset scarcity. In many tariffs, emergency/salvage is either priced at higher “rig rates” or quoted case-by-case.

How it’s usually billed

• Higher hourly rates (often called rig rate), with minimums

• Sometimes double rates if the vessel is “dead ship” or loses power during service

• Salvage may be quoted rather than tariffed, depending on scope

What it usually costs

You will routinely see emergency hourly numbers above standard assist, commonly:

• ~$3,000+ per tug-hour in published tariffs for dead-ship / aground work, plus surcharges and minimums.

Published examples

• Suderman & Young: “pulling a vessel aground and for dead ship moves” at $3,265 per hour, and a separate “rig rate (harbor)” also at $3,265 per hour. 

• Port of Miami schedule states: if a vessel loses power or steering during tug services, charges are double the applicable rate(s). 

• Foss Hawaii rate sheet states that rates for rescue towing, assisting vessels aground, salvage, and other services not specified “will be provided upon request,” which is typical: true salvage is frequently quoted, not tariffed. 

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6) Government procurement for infrastructure and harbor services

Government work spans two very different models:

1. Project support (move barges/equipment for dredging, bridge work, debris removal), and

2. Standby availability charters (tugs on call for a naval base or port complex).

How it’s usually billed

• Time charter / daily hire (government pays a daily rate whether used or not in some contracts), or

• Hourly/project billing under defined labor and equipment schedules.

How government time charters are structured (publicly documented)

• A GAO case discussing tug charters describes a time charter arrangement where the contractor is “paid a daily rate for each tug boat regardless of whether the tugs are used.” 

• MSC’s TUGTIME charter-party language states the daily hire rate is payment in full for vessel services (but does not include port charges or the price the contractor pays for fuel) and notes rates are set at award in a price sheet. 

What it usually costs

Actual government-awarded day rates vary and are often not published in the base solicitation document. The most defensible public anchors are therefore:

• published commercial charter rate sheets (e.g., $12,295/day + fuel), 

• and public charter contracts (e.g., $13,600/day tug/barge unit; $9,625/day tug in a specific SEC exhibit). 

In practice, government “availability” charters are often competitive-procurement priced and can be very sensitive to:

• crew requirements (24/7 coverage),

• security and training requirements,

• and location constraints (limited local tug supply).

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7) Subcontracted capacity through primes, brokers, and larger operators

Subcontracting happens when the end customer contracts with a prime (marine construction firm, barge line, terminal operator, or major tug company) and that prime sources extra tugs.

How it’s usually billed

• Negotiated day rate or hourly rate between prime and sub, often with:

  • mobilization/demobilization rules,

  • standby terms,

  • and strict scope definitions.

What it usually costs

There is no universal published tariff for subcontract rates, but two consistent patterns hold:

1. The subcontractor rate is often a discount to the prime’s “customer-facing” rate, because the prime is carrying customer acquisition, coordination, and sometimes liability packaging.

2. The sub’s rate can also be higher than expected when capacity is tight, because the prime is buying availability at short notice (especially during peak port congestion or weather windows).

A practical way to describe it (without overclaiming precision) is:

• Subcontracted tug pricing commonly tracks the same underlying market anchors you see in published port tariffs—hourly rates in the ~$1,300–$3,000+ per tug-hour range and charter day rates in the ~$9,000–$13,000+ per day band for certain tractor tugs, then adjusted for urgency, mobilization, and tug class. 

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Summary On Pricing

If you want a concise takeaway (while staying accurate):

• Ship-assist: commonly priced per tug per hour or per move; published examples show roughly $1,350/hr in some ports up to $3,243/hr in major complexes, plus surcharges. 

• Towage charters: commonly day rate + fuel + mobilization, with public anchors in the ~$9,625–$13,600/dayrange in some contracts and $12,295/day + fuel in a published rate packet (contract- and region-dependent). 

• Shipyard support: usually hourly with minimums, often $1,350–$2,070/hr in published schedules, plus overtime/holiday multipliers. 

• Escort: frequently premium pricing; published examples include $2,519/hr and $3,243/hr per tug depending on port. 

• Emergency/dead ship: frequently priced at higher “rig” rates; published example shows $3,265/hr and some ports explicitly double rates for loss of power/steering during service. 

• Government: commonly time-charter daily hire structures (often fuel excluded) with rates set by award; public examples support the same general day-rate bands seen commercially. 

• Subcontracting: negotiated; typically tracks local market tariffs with discounts or premiums driven by availability and mobilization.

How Tugboats Usually Get Their Jobs

  

Key Topics Covered in This Article

• How tugboat work is assigned and scheduled
• Port authority and harbor towage operations
• Contracts with shipping companies and agents
• Dispatch systems and marine service networks
• Emergency response and ad-hoc towing jobs

Tugboat companies rarely get hired “because someone wants a tug.” They get hired because a vessel, terminal, shipyard, cargo owner, or project manager has a specific operational problem: a ship must be docked safely, a barge must be moved on schedule, an offshore structure must be repositioned, or a stranded vessel must be recovered. The hiring pathways look different depending on whether the job is routine port work, scheduled towing, or emergency response, but the common theme is that tug services are procured through a mix of long-term agreements, spot charters, and regulated service arrangements tied closely to risk management and logistics.

Below are the most common ways tugboat companies are hired, the job types they map to, and how commercial terms are typically structured.

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1) Port and Terminal Contracts: “Ship-Assist on Call” (The Most Common Model in Busy Ports)

In major ports, the most consistent revenue stream for tug operators comes from ship-assist work: docking, undocking, shifting, and escorting deep-draft vessels. These services are commonly procured through standing arrangementsbetween tug providers and:

• Container terminals

• Petroleum and chemical terminals

• Cruise terminals

• Bulk cargo terminals

• Port authorities or harbor districts

• Shipping lines and vessel operators

How the hiring happens

Rather than negotiating a fresh contract for each ship, ports typically operate on:

• Tariffs or published rate schedules (often port- or operator-specific)

• Master service agreements (MSAs) that set baseline terms, liability, and billing

• Terminal service agreements guaranteeing availability, response time, or dedicated assets during specific windows

Why this model dominates

Ship-assist is high frequency and time-sensitive. A container ship’s berth window is scheduled down to the hour; a tanker may have strict safety requirements; a cruise ship needs predictable turnaround. For that reason, many terminals and agents default to a tug provider they trust and have an agreement with, rather than shopping every job.

Commercial structure

Port work is often billed as:

• Per-assist / per-move fees (e.g., docking + undocking + shift)

• Hourly minimums (common for delays or standby)

• Escort premiums where escort tugs or special equipment is required

• Surcharges for holidays, night operations, emergency mobilization, or specialized firefighting capability

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2) Through the Ship’s Agent: The Agent as the “Purchasing Desk” for Tugs

A major portion of tug hiring in port is initiated by a ship’s agent. Agents coordinate the services a vessel needs to enter, operate in, and depart a port, including:

• Tugs

• Pilots

• Line handlers

• Berth reservations

• Launch services

• Waste and bunkers

• Customs and port paperwork

How it works operationally

The vessel owner/operator sends the agent the arrival plan. The agent then:

• Requests tugs from the approved tug operator(s)

• Confirms the move time, berth, and vessel particulars

• Coordinates with the pilot, terminal, and tug dispatcher

Why it’s common

Agents reduce friction. They already have relationships, credit arrangements, and local knowledge. For tug companies, agents are a steady source of business because the tug provider becomes part of the port’s standard operating rhythm.

Commercial structure

• Invoices may go to the agent who passes costs to the owner/charterer, or directly to the vessel interests.

• Payment terms and dispute resolution are often governed by the MSA or the port tariff.

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3) Scheduled Towing Charters: Moving Barges, Equipment, and Work Platforms

Outside pure ship-assist, tugboat companies are often hired to tow barges and floating equipment. This is common in construction, dredging, environmental remediation, and coastal freight.

Typical customers

• Barge operators and barge owners

• Construction firms and marine contractors

• Dredging companies

• Terminals and bulk material operators

• Industrial project managers moving large equipment on water

How the hiring happens

This work is frequently arranged via:

• Voyage charters (a tug is hired for a specific trip from Point A to Point B)

• Time charters (the tug is hired for a period of time at a daily rate)

• Project charters (a tug is assigned to a project for its duration with defined scopes and standby rules)

Commercial structure

• Day rate / time charter: common when project schedules are uncertain and tug availability needs to be guaranteed

• Lump sum / voyage rate: common for predictable, one-time moves

• Standby rates: common when the tug is waiting on construction milestones, weather, or permitting

• Fuel terms: either included or billed separately depending on the contract

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4) Shipyard and Drydock Support: Shifts, Dead Ship Moves, and Launches

Shipyards and repair facilities regularly hire tugs for:

• Shifting vessels within a yard basin

• Moving “dead ships” (vessels with limited propulsion)

• Assisting launches and haul-outs

• Positioning barges, cranes, and floating drydocks

How the hiring happens

This is often arranged through:

• The shipyard’s operations team under a blanket agreement

• Project managers who book tugs as part of a repair schedule

• Emergency calls when a vessel’s propulsion is not available as planned

Commercial structure

• Often hourly with minimums, because the tug is tied to yard workflow variability

• Premiums for tight maneuvering, difficult environmental conditions, or short-notice mobilization

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5) Escort and Risk-Management Contracts: Tankers, LNG, and High-Consequence Transits

Escort work is a specialized segment. In certain waterways and terminals, tug companies are hired not just to “help dock” but to provide safety and control during transit—including steering and braking forces at speed.

Typical customers

• Oil majors and petroleum terminals

• LNG terminals and operators

• Tanker operators and charterers

• Port authorities with escort requirements

How the hiring happens

• Often through terminal rules and regulatory requirements specifying minimum escort capabilities (bollard pull, FiFi, redundancy)

• Via pre-approved tug lists that meet terminal vetting standards

• Through long-term agreements because escort coverage must be reliable

Commercial structure

• Higher rates than standard assist work due to specialized assets, training, and compliance

• Billing can be per transit with defined windows and penalties for delays or non-availability

• Stronger contractual language around liability, incident response, and safety management systems

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6) Emergency Response and Salvage: The “Call-Out” Model

Tug companies are frequently hired on short notice for:

• Disabled vessels (loss of propulsion or steering)

• Groundings

• Fire response support (FiFi tugs)

• Tow-to-safe-harbor operations

• Storm preparation and post-storm recovery

Who hires them

• Vessel owners and managers

• Insurers and P&I clubs (directly or through appointed salvors)

• Coast Guard / port authority coordination (varies by jurisdiction)

• Salvage companies that subcontract towing assets

How it’s procured

• Often a phone call to a dispatcher with immediate mobilization

• Followed by formalization under standard salvage/towage terms

Commercial structure

• Emergency rates and minimums are common

• In true salvage, contracts may be based on forms like LOF-style approaches (depending on region and case specifics), but routine emergency towing is often hourly/day-rate under established towage terms

• Documentation, logs, and incident reporting become critical because claims and liability allocations follow

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7) Government and Municipal Work: Port Services, Public Safety, and Infrastructure

Public agencies hire tug services for:

• Moving public barges or equipment

• Supporting bridge projects, dredging, debris removal

• Emergency response readiness

• Harbor maintenance operations

How the hiring happens

• Through formal procurement (RFPs, RFQs, bid lists)

• Prequalified vendor rosters

• Term contracts with performance and insurance requirements

Commercial structure

• Highly document-driven: compliance, crew qualifications, safety plans, and reporting

• Rates may be fixed for a term with defined escalation provisions

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8) Subcontracting and Brokered Work: When the Tug Company Is Not the Prime

Not all tug work is booked directly by the end customer. Tug companies are often hired as subcontractors through:

• Marine construction primes

• Barge lines

• Logistics brokers specializing in heavy transport

• Salvage firms

• Larger tug operators that “cover” demand spikes with partner boats

Why it happens

• Capacity constraints during busy seasons

• Specialized local knowledge needed for specific waterways

• One operator has the contract, another has the available boat

Commercial structure

• The subcontractor may work on a negotiated day rate while the prime bills the customer under a broader project contract

• Clear scope and liability flow-down clauses are essential

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9) Retainer and Dedicated Asset Models: Paying for Availability

Some customers hire tug companies not because they need a tug every day, but because they cannot afford to wait when they do.

Typical customers

• Large terminals with frequent but variable moves

• Industrial facilities with safety requirements

• Operators in remote areas where tug supply is limited

How it works

• Dedicated tug on station (full-time assignment)

• Retainer + call-out fee (availability payment plus usage charges)

• Seasonal contracts (high season coverage)

This model is essentially an availability hedge—customers pay to reduce operational risk.

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10) What Customers Evaluate When Hiring a Tug Company

Across all of these hiring channels, buyers tend to look at a consistent scorecard:

• Capability match: bollard pull, propulsion type (ASD/tractor), winch gear, FiFi, escort rating

• Reliability and response time: can they show up on time, every time?

• Local knowledge: currents, tides, terminal quirks, pilot preferences

• Safety record and SMS maturity: incident history, training, compliance culture

• Insurance and liability terms: limits, indemnities, towage conditions

• Dispatch and communication: professional coordination reduces delays and claims

What Percent of 1980s–1990s Tugboats Have Been Repowered—and What They Were Repowered With

  

Key Topics Covered in This Article

• Estimated repower rates for 1980s–1990s tugboats
• Drivers of marine engine repowering decisions
• Common replacement diesel engine platforms
• Upgrades in efficiency, emissions, and performance
• Fleet modernization and lifecycle extension trends

Executive view

There is no single authoritative, nationwide statistic that says “X% of all 1980s–1990s tugboats have been repowered,” largely because U.S. tugboats span multiple regulatory regimes and operating profiles (harbor assist vs. coastal towing vs. inland towboats), and “repower” is inconsistently recorded (full engine replacement vs. major overhaul vs. powerpack swap).

That said, when you triangulate (a) typical tug service life, (b) engine useful life, and (c) regulatory-driven turnover in regulated markets, you can bound the answer credibly:

• In heavily regulated harbor environments (especially California): it is reasonable to expect a strong majority of 1980s–1990s tugboats that remain active have been repowered at least once, commonly into Tier 2 / Tier 3-era packages, because California’s Commercial Harbor Craft (CHC) program has explicitly driven replacement of older engines since 2009 and required Tier 2 or Tier 3 engines on a subset of harbor craft categories (including tugboats) by the end of 2022. 

• Across the broader U.S. fleet (outside the most stringent harbor programs): repower prevalence is still high for vessels that are actively working (because repowers are often needed over a 30–40 year tug life), but the rate varies materially by mission and utilization. 

A practical “decision-useful” estimate for tugboats built in the 1980s–1990s that are still in service today is:

• Harbor/ship-assist tugs in regulated markets: often 70–90%+ have undergone at least one major repower (or equivalent engine replacement event), because many original engines would have been pre-Tier or early Tier and compliance programs accelerated turnover. 

• Coastal/ocean towing and general utility tugs: commonly 50–80% repowered at least once, driven more by lifecycle economics than by strict local rules, but still pulled forward by emissions and reliability needs. 

• Inland towboats/pushboats (a related but distinct segment often lumped with “tugs”): repower pathways are frequently structured around EMD platform modernization (e.g., 645 → 710) rather than brand switching, and repower prevalence is strongly tied to duty cycle and corridor/regulatory pressure. 

These are ranges, not a single point estimate, because the underlying population differs dramatically by geography and service profile.

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1) Why repower rates are high for 1980s–1990s tugs that are still operating

Tugboats are long-lived; engines are not

A well-run tug hull can remain commercially viable for decades, but a propulsion engine typically faces major lifecycle events well before the hull is done. Industry case material explicitly frames repowers as a major-but-normal life-extension action over a tug’s 30–40-year operating life. 

If a tug built in:

• 1985 is ~41 years old today (2026)

• 1995 is ~31 years old today

…then a significant share of those vessels that are still active will have passed through at least one decision point where the owner either:

• performs a major overhaul, or

• replaces engines (repower), often when a reliability/compliance threshold is crossed.

Emissions regulation “pulls repowers forward” in certain ports

California’s CHC framework is one of the clearest examples of policy-driven engine turnover: CARB notes that since 2009 harbor craft owners have replaced older engines with newer, cleaner engines to comply with the regulation. 
CARB also states that by the end of 2022, the current regulation requires Tier 2 or Tier 3 engines on a subset of harbor craft categories including tugboats. 

That dynamic makes it much more likely that an 80s/90s tug operating in those waters has modernized propulsion compared to a similar tug working in less regulated regions.

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2) What counts as “repowered” (and what often gets miscounted)

Owners and brokers use “repower” in multiple ways. For clarity:

• True repower (strict): replacement of main propulsion engines with different engines (often different model series and/or new emissions tier).

• In-family replacement: swapping to a newer engine in the same OEM family (e.g., updating within a Cat 3500 lineage), which is still a repower but can be reported ambiguously.

• Major overhaul / remanufacture: not always logged as a repower, but can feel like one operationally. Some inventory methodologies explicitly assume rebuilding does not “reset” deterioration in emissions terms, which further blurs the public record. 

When you ask “what percent have been repowered,” your answer will move depending on whether you include “in-family replacements” and whether you treat major remans as repowers.

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3) If repowered, what were 1980s–1990s tugs most commonly repowered with?

Repower choices cluster around a few engine families that balance packaging, supportability, and emissions compliance.

A) Cummins: K-series and QSK-series (very common across workboat repowers)

Cummins K-series (e.g., K38) repowers show up as classic replacements for aging legacy packages. One documented tug repower narrative describes replacing older Detroit 12V71 engines with Cummins K38 marine engines. 

As emissions pressure increased, the Cummins QSK38 became a common modernization choice in tug horsepower bands, including ship-assist applications where Tier compliance was a driver. 

Where this is most common

• Harbor/assist tugs and utility tugs

• Fleets standardizing around Cummins parts/service ecosystems

B) Caterpillar 3500 family (3512/3516) and upgrade pathways

For higher-horsepower tugs, Cat’s 3500-series is a frequent repower destination (or an “in-family” modernization platform). Repower activity and upgrade solutions for Cat 3512/3516 have been widely discussed in the context of extending vessel life and meeting evolving emissions requirements. 

Where this is most common

• Escort/ship-assist and higher bollard pull tugs

• Operators with strong Cat dealer support and standardization preferences

C) EMD 645 → EMD 710 modernization (especially inland towing / towboats)

In inland towing contexts, the installed base historically included many EMD 645 engines, and multiple studies and industry materials evaluate repowering from 645 to 710 for emissions and performance benefits. 

Where this is most common

• Inland towboats/pushboats and heavy-duty towing corridors

• Operations optimized around medium-speed engine maintenance infrastructure

D) MTU, Mitsubishi, and other commercial marine packages (selective but real)

Some operators select alternative OEM packages for specific duty cycles, packaging constraints, or vendor relationships. For example, industry repower coverage includes Mitsubishi Tier 3 mechanical engines replacing earlier packages in a tug repower aimed at EPA compliance. 
Fleet communications also describe repower histories that include Tier 2 MTU installations and subsequent repower planning. 

Where this is most common

• Fleets with established OEM relationships

• Repowers constrained by footprint, weight, or drivetrain integration

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4) A practical “percent repowered” interpretation you can use (without pretending precision)

Because a nationwide repower registry is not readily available, the most defensible way to answer “what percent” is to distinguish (1) all vessels ever built from (2) vessels still in service today.

If you mean: “Of all 1980s–1990s tugboats ever built…”

A large portion are retired or scrapped. Counting repowers across retired hulls is inherently noisy and under-documented.

If you mean (more useful): “Of 1980s–1990s tugboats still operating today…”

Then repower prevalence is typically high, because the vessels are now 30–45+ years old and repowers are often part of sustaining a 30–40 year tug lifespan. 
In regulated harbors, compliance programs further increase the likelihood that older engines have been replaced with Tier 2/3/4 pathways. 

Reasonable working ranges (in-service fleet)

• Harbor/assist in regulated markets: ~70–90%+ repowered at least once

• General coastal/utility tug service: ~50–80% repowered at least once

• Inland towing (platform modernization emphasis): often high but reported as “reman/upgrade/modernization” as much as “repower,” with common 645→710 pathways.