A line tangled around the propeller is really bad luck, but it can happen. Let’s explore together the different ways to resolve this unexpected problem, which occurs in certain specific situations
As winter enters its coldest phase, the staff at the Genoa Marina Porto Antico marina have decided to take stock of another somewhat challenging topic that deserves the attention of boat owners, sailors, and captains—perhaps during an evening of reading by the fireplace.
A rope getting tangled around the propeller is an unpleasant situation that can happen despite our best efforts in various scenarios, from entering the berth to maneuvering in the anchorages. Let’s look at some tips on how to untangle the propeller and what to do in case of an emergency.
Yarn Tangled in the Spinner: Causes
Why can it happen? It happens in crowded ports and it happens on summer days: the line from some buoy, the well-known mooring line, or even a plastic bag adrift, and suddenly the engine stops. It’s the propeller that, encountering a foreign object, blocks the shaft and consequently the engine.
The first operation to perform, as soon as you notice that the engine is no longer running, is to definitively shut down the propulsion system. Marine mechanics explain that if you don’t promptly disengage gear and throttle, the risk is then to increase the stress on the transmission shaft, with the consequence of inevitable damage to it.
A small tip. If you notice these “symptoms” we just mentioned, a trick is to reverse the gear for a fraction of a second. This sometimes helps by allowing the propeller to be freed in the blink of an eye. The positive result often occurs when the foreign object is a large-sized cable.
Another tip. If it were the onboard lines tangled around the propeller, for example the spinnaker sheet, in some cases these can be untangled by applying simple traction to their free end, always after putting the engine in neutral, not before.
A Rope in the Boat’s Propeller: What to Do
If this is not the case, the next step involves stopping navigation immediately and dropping anchor for the necessary checks.
If it’s not possible to anchor, it’s necessary to proceed as best as possible. We suggest securing the person who will go underwater to inspect the propeller and doing so with a safety line tied to the boat.
What you need in terms of equipment. You need a good mask, fins, snorkel and a knife. Then dive in the propeller area to see who the “enemy” is. Well armed with a sharp and serrated knife, you can easily defeat the line wrapped around the beautiful propeller fitted to your yacht.
It should be added that during mid-season days, it would be advisable to navigate with a wetsuit on board, as this would help intervene in these emergencies with suitable equipment in case of cold waters. Needless to say how advantaged anyone with diving skills would be, perhaps acquired through an appropriate course, which certainly doesn’t hurt.
FAQ – Rope Tangled in the Boat’s Propeller
How can you tell if a rope has gotten tangled in the propeller?
There are several signs that indicate a rope has become entangled around the propeller. The most obvious is a sudden loss of thrust accompanied by a rapid drop in engine RPM, possibly leading to the engine stalling. In other cases, when the rope does not completely prevent the propeller from rotating, you may notice unusual vibrations or metallic noises, along with significant difficulty performing even the simplest maneuvers. Even if the engine continues to run, it is important not to ignore these symptoms: continuing to sail could aggravate the problem and cause damage to the propeller, the shaft, or the engine mount.
Is it possible to keep sailing with a rope tangled in the propeller?
Generally speaking, no. If the rope is wrapped around the propeller, continuing to run the engine can increase the strain on the drivetrain and cause mechanical damage—which can be severe and costly. If the boat is safe and sea conditions permit, it is best to stop and assess the situation. If, for any reason, you are unable to immediately and independently clear the propeller, we recommend requesting assistance or, if necessary, having the boat towed to a port.
When is it best to avoid diving to free the propeller?
It is not always safe to go into the water. Rough seas, strong currents, poor visibility, heavy boat traffic, or low temperatures can turn a relatively simple activity into a risky situation.
After removing the rope, is there anything I need to check?
Yes. Even if the engine seems to be running normally, it’s a good idea to check that the propeller blades aren’t bent or chipped; you should also check for any abnormal play in the shaft or engine mount. Furthermore, during the first few minutes, pay close attention to any vibrations or unusual noises.
Can you prevent the risk of a rope getting caught in the propeller?
It is important to always keep the ropes on board tidy during maneuvers, prevent them from hanging in the water, and watch out for buoys, floating cables, and debris in the water. In marinas and at anchorages, it is also advisable to proceed at a moderate speed so that you have enough time to spot any obstacles and react without making sudden maneuvers.