Rope caught in the propeller: The key steps to take in an emergency
Read more at BOOTE:
Anyone wishing to improve their preparation for harbour manoeuvres will find practical advice in Harbour manoeuvres: What you should bear in mind when mooring and casting off, more basics on proper sheet handling in Seamanship: Ropes – how to splicing, securing and throwing them correctly and a concise emergency guide in Troubleshooting on board: these 8 tips will help with any boat breakdown.
Text: Nico Krauss; Updated by Antonia von Lamezan, 3 August 2026
This problem can crop up from time to time: whilst a yacht is underway and the engine is running smoothly, whether in forward or reverse gear, the engine suddenly fails and cuts out abruptly. It’s a shocking moment, especially if the engine failure occurs during a narrow passage, whilst manoeuvring in a harbour, or whilst moored off the coast.
Before starting the engine again, the mental checklist for identifying the cause runs through my mind: fuel supply, engine failure, electrical system? A quick glance aft sheds light on the captain’s now looming hour of darkness: there is a rope lying on the cleat, running taut across the gunwale and continuing close to the hull down towards the waterline, all the way down to the propeller. The loose end has, as it were, been sucked in, wrapped round the shaft, and then choked the propeller’s rotation from 2,500 to zero. Disbelief, astonishment, swearing, finger-pointing – but none of that helps now. On the contrary, this moment of truth calls for the swiftest possible action: check the surroundings, consult the nautical chart, organise a tow. More important than a quick fault-finding exercise in this situation is securing the boat, gaining distance and avoiding putting any further strain on the jammed propulsion system.
Why restarting blindly is risky
The actual damage to the drive system can often only be assessed at a later stage. At the moment the engine stalls, shafts may have been bent and seals destroyed. If seawater enters the gearbox unnoticed as a result, or if melted remnants of the propeller cord remain behind the propeller hub, continuing the journey risks causing gradual, total failure of the gearbox.
Top priority: getting out of the dangerous situation
Anyone who has managed to prevent further damage to body, mind and hull can, whether through skill or luck, first drop anchor or request a tow and head for the nearest port. Only then can they focus fully on the disaster affecting the propeller.
It’s worth a try: disengage the engine and pull on the line causing the problem. With a bit of luck, you’ll be able to free the propeller and restart the engine. If that doesn’t work, you’ll need to dive yourself or hire a diver to remove the line, net or plastic sheet that’s become entangled around the shaft or Saildrive.
Key points at a glance
- Disengage the clutch when the revs drop significantly whilst driving
- Don’t restart blindly
- Check the surroundings and assess the risks; drop anchor if necessary
- Arrange for a tow if the yacht cannot be manoeuvred safely under its own power
- Do not investigate the cause in more detail until the boat has been secured
You might also be interested in:
Series: Propeller Emergencies and Propulsion Protection, Part 1 of 4
This series explains what to do immediately if a screw becomes jammed, what damage this could cause to the drive, and how to prevent such problems.
Nico Krauss
Freier Fotograf
