What the Examiner Is Really Probing
At command standard, towing questions test whether you can make sound decisions under pressure, brief your crew, and manage the operation safely from start to finish — not just recite the steps. A pass-standard answer demonstrates situational awareness, command authority, and an understanding of the risks that can kill people or lose the vessel. A candidate who lists steps without explaining why will not pass at Master level.
Towing Fundamentals
Before accepting or offering a tow — LOF vs. TOWCON/TOWHIRE
The first decision is legal and commercial, not seamanship. The choice of agreement turns on the circumstances:
- Danger or distress situation — Lloyd's Open Form (LOF 2024) is the default framework. It operates on a 'no cure, no pay' basis with salvage remuneration assessed afterwards by arbitration. If a vessel is in danger and a salvor offers assistance, LOF 2024 is the instrument that will normally apply unless the parties expressly agree otherwise.
- Planned commercial towage — where no distress exists and a tow has been arranged in advance (e.g. moving a vessel between ports), a fixed-price contract such as TOWCON (lump-sum) or TOWHIRE (daily hire) gives commercial certainty and avoids salvage claims arising from the operation.
As Master, you must understand which framework applies before agreeing terms. If in doubt, contact owners and P&I before committing. Accepting a line thrown by a salvor before agreeing terms can imply LOF 2024 in law — instruct crew accordingly.
Forces involved
Towing imposes enormous dynamic loads. Catenary in the towline (sag created by weight) absorbs shock. Loss of catenary in heavy weather creates snatch loads that part lines instantly. Bridles spread the load and improve directional control. Never use a single attachment point unless there is no alternative.
Towline selection and rigging
- Use the longest, heaviest line practicable to maximise catenary and dampen snatch.
- Inspect for chafe points (bow roller, fairlead, chocks) — chafe is the primary cause of parting. Protect with bagging, leather, or sacrificial wrapping.
- Towing speed must be set by the weakest element: the line, the attachment points, or the towed vessel's structural limits.
- On a yacht, the towing point is critical. Deck cleats are rarely adequate for open-sea towing; route the line through a fairlead to a winch drum, or rig a bridle to samson post / anchor windlass.
Towed vessel responsibilities
- Maintain a helmsman if steering gear functions; even partial steerage greatly aids course-keeping and reduces yaw, which is the main cause of snatch.
- Post a dedicated crew member to monitor the towline and watch for chafe — they must be able to cut the line instantly if it rides up or threatens to capsize the vessel.
- Keep a sharp knife or axe immediately accessible at the attachment point.
- Maintain communication with the tug on an agreed VHF channel; agree signals for 'stop', 'slow down', 'emergency release'.
- Manage freeboard and trim; adjust ballast to reduce drag and yaw.
- Prepare an anchor to drop if the towline parts near a hazard.
Towing vessel responsibilities
- Gradual acceleration — sudden loading parts lines and can injure crew on the towed vessel.
- Monitor towline angle; excessive yaw on the tow increases effective load dramatically.
- Reduce speed in deteriorating weather before line strain becomes critical, not after.
- Responsible for safe navigation of the combined tow; collision regulations apply — a vessel towing displays the appropriate day shapes and lights (Rule 24).
Safety priorities throughout
Keep crew clear of the towline under load — a parting line is lethal. Nobody stands in the 'snap-back zone'. Conduct a safety brief before commencing.
How to Structure Your Spoken Answer
Open with the decision (LOF 2024 or TOWCON/TOWHIRE as appropriate to whether distress is present; accept or decline given conditions and resources). Move to preparation (line selection, attachment, crew brief, signals agreed, comms established). Cover execution (gradual take-up, catenary management, chafe watch, speed). Address contingencies (line parting, deteriorating weather, entering confined waters). Examiners want to hear you thinking ahead, not narrating what has already happened.