USCG Assistance Towing (AT01)

Under 46 CFR 11.482, which mariner generally needs an Assistance Towing endorsement to engage in assistance towing?

• AAny recreational boater towing a friend for free
• BA holder of an OUPV or limited Master/Mate officer endorsement who will commercially assi…
• COnly Able Seafarer ratings on inspected vessels over 1,600 GRT
• DOnly engineers holding Designated Duty Engineer endorsements

Which credential holders do NOT need an Assistance Towing endorsement under 46 CFR 11.482(a)?

• AOUPV six-pack operators on near-coastal routes
• BMaster of less than 100 GRT inland only
• CMaster or Mate (Pilot) of Towing Vessels, or Master/Mate on inspected vessels of 200 GRT…
• DMate of less than 200 GRT near coastal

What is the primary purpose of a towing bridle on an assistance tow?

• ATo increase propeller thrust of the towing vessel
• BTo share and equalize load between two attachment points on the towed or towing vessel
• CTo replace the need for a hawser entirely
• DTo measure the exact distance to the tow

What is chafing gear used for during assistance towing?

• ATo increase the stretch of nylon line
• BTo protect towlines and vessel structure where the line rubs on fairleads, gunwales, or b…
• CTo signal that the tow is over 200 meters
• DTo permanently glue the eye of the hawser shut

Why should deck personnel never stand in the bight of a towline?

• ABecause the bight reduces the safe working load of the line
• BBecause a sudden load or snap-back can injure or kill anyone inside the bight
• CBecause Inland Rules prohibit standing near any line
• DBecause the bight voids the vessel's insurance automatically

Before taking a disabled recreational vessel in tow, the most important first decision is:

• AWhether the owner has an account with your company
• BA risk assessment of weather, sea state, gear capacity, crew readiness, and life-safety p…
• CWhether the owner prefers a bow or stern tow for aesthetics
• DHow quickly you can bill the maximum tow fee

What is a hawser in assistance towing practice?

• AA short spring used only for docking large ships
• BThe primary towline that transmits load between the towing vessel and the tow
• CA navigation light required only on inland lakes
• DA type of emergency flare

Under the Navigational Rules, a power-driven vessel towing astern generally shows which additional light above the sternlight?

• AA blue flashing light
• BA yellow towing light
• CA green all-round light
• DTwo red all-round lights

When is a diamond day shape required for a power-driven vessel towing astern?

• AWhenever any vessel is towed, regardless of length of tow
• BWhen the length of the tow, measured from the stern of the towing vessel to the after end…
• COnly when towing in restricted visibility
• DOnly when the towed vessel is a sailing vessel

What is the main operational purpose of leaving some scope (slack length) in a nylon towline rather than towing bar-tight?

• ATo hide the towline from other vessels
• BTo allow the line to stretch and absorb shock loads between the boats
• CTo guarantee the tow will never yaw
• DTo eliminate the need for a lookout

What does emergency release capability mean for an assistance-towing setup?

• AThe ability to cut or cast off the tow quickly under controlled procedures if the tow end…
• BAutomatic release every 15 minutes regardless of conditions
• CReleasing the tow only after returning to the marina office
• DDisconnecting batteries on the disabled vessel

A line has a catalog breaking strength of 12,000 lb. Using a safety factor of 6, what is the approximate safe working load (SWL)?

• A2,000 lb
• B6,000 lb
• C12,000 lb
• D72,000 lb

During a crew briefing before an assistance tow, which item is essential to cover?

• AThe destination and the customer's account details, since the rest is standard seamanship
• BRoles, hand signals/radio procedures, make-up plan, danger zones, and emergency release a…
• COnly the expected towline length, because that determines everything else on deck
• DOnly the weather forecast, since conditions decide whether the tow can be made at all

What is the preferred general approach when making up to a disabled recreational vessel in moderate wind?

• ACharge alongside at full speed to minimize time on scene
• BApproach slowly with a plan that accounts for wind and current, remaining ready to abort
• CAlways approach from dead ahead with maximum throttle
• DPass a towline while both vessels are still planing

If a person falls overboard while the towline is under tension, the first priority is:

• APhotograph the event for the insurance claim
• BKeep making way with the tow to stay on schedule
• CLife safety—mark the person, recover the MOB under controlled procedures, and manage or r…
• DIncrease speed so the towline lifts clear of the water

Assistance towing authority under 46 CFR 11.482 is limited to:

• AAny vessel of any tonnage worldwide regardless of the mariner's MMC
• BVessels and operations within the scope of the mariner's MMC endorsement
• COnly vessels under 5 GRT
• DOnly federal government vessels

Which attachment point on a small disabled pleasure craft is generally preferred for a bow tow when structurally sound?

• AA decorative grab rail never designed for towing loads
• BA dedicated bow eye or primary bow cleat/bitt rated for the expected load
• CThe windshield frame
• DA fishing rod holder

Polypropylene towlines float. What is a key safety trade-off of that material?

• AIt has unlimited UV resistance and never degrades
• BIt floats (helpful for recovery and prop-fouling awareness) but often has poorer UV resis…
• CIt is always stronger than wire rope of the same diameter
• DIt eliminates all snap-back risk

You are towing at 4 knots. Approximately how long will it take to cover 2 nautical miles at constant speed?

• A15 minutes
• B30 minutes
• C45 minutes
• D60 minutes

What is a primary reason to use chafe protection where a towline crosses a gunwale?

• ATo make the line look professional in photos
• BTo prevent heat and abrasion from cutting the line under load
• CTo increase the diameter of the line for Rules of the Road purposes
• DTo keep the towed vessel from steering

Before accepting a commercial assistance-tow job in deteriorating weather, the operator should:

• AIgnore forecasts if the customer insists
• BCompare forecast wind/sea against vessel capability, gear limits, and safe harbor options
• CAssume all recreational vessels can be towed in any conditions
• DProceed only if the marina restaurant is still open

A bit or bollard used for towing should be:

• ALightly mounted decorative hardware
• BStructurally secured to the vessel so it can carry the expected tow load without pulling…
• CUsed only if painted yellow
• DGreased heavily so the line always slips free

When communicating with the operator of a disabled recreational vessel before towing, you should:

• AGive no instructions so they stay relaxed
• BEstablish radio/hand-signal plan, seating/PFD expectations, and what they must not do wit…
• CTell them to reverse at full power once under way
• DRequire them to cast off all PFDs for comfort

What is shock loading in a towing context?

• AA steady static load equal to vessel displacement
• BA sudden peak force when a slack line snaps tight or vessels surge in a seaway
• CThe electrical load of navigation lights
• DThe fee charged for emergency night tows

At night while towing, the towing vessel operator must ensure:

• AAll deck lights are extinguished including navigation lights
• BProper towing navigation lights are displayed and a proper lookout is maintained
• COnly the yellow towing light is shown with no sidelights
• DAIS is turned off to reduce clutter

If the disabled vessel is taking on water and at risk of sinking under tow, the best general priority is:

• AIncrease tow speed to reach the marina faster at any risk
• BProtect life first—evacuate people as needed, dewater if safe, and be prepared to drop th…
• CIgnore flooding until after docking
• DRemove all PFDs so people can swim better

How can a mariner satisfy 46 CFR 11.482(b) for Assistance Towing?

• ABy oral interview only with no exam or course
• BBy passing a written examination or completing a Coast Guard-approved course on assistanc…
• CBy watching any online video without assessment
• DBy holding only a TWIC card

A common knowledge-level insurance/liability point for commercial assistance towing is:

• ANo insurance is ever needed if you hold any USCG credential
• BOperators should understand that commercial assistance can create liability exposure and…
• CLiability only applies if the tow exceeds 200 meters
• DRecreational insurance always covers unlimited commercial towing for hire

When towing into a crowded harbor, the best general practice is:

• AMaintain maximum safe open-water towing speed through the fairway
• BReduce speed early, increase control and communications, and plan the approach to the ber…
• CDrop the tow at the jetties and let the disabled vessel drift in
• DTurn off the VHF to avoid distractions

Why is nylon often preferred for some assistance-tow hawsers?

• AIt has zero stretch, so the tow never surges
• BIts elasticity helps absorb shock loads compared with very low-stretch materials
• CIt is completely immune to chafe
• DIt sinks so aggressively it cannot foul a prop

A hawser with 30,000 lb breaking strength is used with a safety factor of 5. What is the SWL?

• A5,000 lb
• B6,000 lb
• C15,000 lb
• D150,000 lb

You must cover 6 nautical miles towing at 3 knots. What is the estimated transit time?

• A1 hour
• B1.5 hours
• C2 hours
• D3 hours

When making up an equal-leg bridle on a towed vessel's bow cleats, unequal leg lengths will most likely:

• AHave no effect on load distribution
• BOverload the shorter leg and its fitting
• CAutomatically increase the SWL of both legs
• DConvert the tow into a side tow without yaw

A power-driven vessel towing astern with a tow over 200 m must show how many masthead lights in a vertical line (in addition to sidelights, sternlight, and towing light arrangements under Rule 24)?

• AOne masthead light only
• BTwo masthead lights
• CThree masthead lights
• DNo masthead lights if a diamond is shown

What is a major hazard of towing with excessive speed in a seaway?

• AReduced fuel consumption only
• BIncreased shock loading, loss of control of the tow, and higher risk of parting the hawser
• CAutomatic compliance with safe speed under the Rules
• DElimination of yaw

In shallow water while towing, bank suction and squat effects may require the operator to:

• AIgnore helm response changes
• BReduce speed and allow extra room for reduced maneuverability and increased draft effect
• CIncrease speed to plane both vessels
• DTrail the towline on the bottom as a drogue

If fire is discovered on the towed recreational vessel, the towing vessel should generally:

• AClose the distance and continue at full speed into the fire's smoke
• BProtect people, communicate, and consider releasing or repositioning the tow to keep the…
• CPump fuel toward the tow to smother flames
• DIgnore the fire if it is only on the tow

A fairlead's primary function in towing is to:

• AGenerate electrical power for the tow
• BGuide the towline fairly and control the lead so loads act as intended on bits and struct…
• CMeasure breaking strength in real time
• DReplace the need for navigation lights

You estimate steady towline tension at 1,500 lb, but wave-induced snatch may triple the peak. Which line SWL is the minimum acceptable among these choices?

• A1,000 lb SWL
• B1,500 lb SWL
• C5,000 lb SWL
• D2,000 lb SWL

When should you refuse or postpone an assistance tow?

• AOnly if the customer has no cash on scene
• BWhen weather, gear, crew, or vessel condition make the job unacceptably dangerous
• CNever—commercial operators must always accept every job
• DOnly at night regardless of conditions

A side-tow (alongside) of a disabled vessel into a slip is often used because it:

• AEliminates all need for fenders
• BProvides better low-speed control and docking precision than a long astern tow in confine…
• CIs required by Rule 24 for all tows under 50 m
• DAllows higher open-ocean towing speeds

Which practice best reduces girting risk for a small towing vessel?

• ASecuring the towline far aft of the pivot point with no way to release if the tow pulls a…
• BKeeping the towline lead such that the force cannot pin the towing vessel broadside, with…
• CTowing only with the helm hard over permanently
• DUsing the shortest possible wire with zero stretch in a seaway

A vessel being towed astern at night generally exhibits:

• AMasthead lights identical to a power-driven vessel making way alone
• BSidelights and a sternlight (and a diamond by day if the tow exceeds 200 m)
• COnly an all-round white light
• DThree green lights in a vertical line

If you travel 3 nautical miles in 45 minutes while towing, your average speed is:

• A3 knots
• B4 knots
• C5 knots
• D6 knots

Why inspect towlines carefully before each job?

• AInspection is optional if the line is less than five years old
• BWear, UV damage, cuts, flat spots, and melted fibers can reduce actual strength far below…
• CInspection only matters for wire rope, not synthetics
• DNew lines never need inspection

When passing a heaving line to a disabled vessel, best practice is to:

• ABend a shackle onto the end as a messenger weight so the throw carries farther in wind
• BUse a soft-weighted heaving line carefully, clear of people, then haul the hawser across
• CThrow the hawser itself across directly, so no second line has to be handled
• DHave the disabled vessel's crew reach out with a boathook while the two hulls are brought…

Knots and bends in a towline typically:

• AIncrease the line's breaking strength
• BReduce residual strength and should be avoided on primary tow hawsers when possible
• CHave no effect on strength
• DAre required by Rule 24

While navigating with a tow, you approach a narrow channel with meeting traffic. Good practice is to:

• AMaintain open-water speed and expect others to keep clear automatically
• BReduce speed early, keep the tow under control, and follow Rules for narrow channels and…
• CCast off the tow in the channel center
• DExtinguish navigation lights to reduce confusion