Boat Propeller Repair FAQs
How Do I Know If My Boat Propeller Is Damaged?
The most common signs are new vibration at speed, lost top speed, sluggish acceleration, unusual noise from the stern, and visible dings or bent blades.
Running on a damaged prop accelerates wear on your shaft, bearings, and engine mounts. If something feels different, get a diver in the water before the problem spreads.
For a full breakdown of what each symptom means and when to act, read our full guide: How Do I Know If My Boat Propeller Is Damaged?
Can a Boat Propeller Be Repaired Underwater?
The removal and reinstallation happen underwater at your slip. The reconditioning itself is done at a certified shop on land. Your boat stays in the water throughout the process, which eliminates haul-out fees, yard time, and scheduling delays. A spare prop can be installed during the turnaround to keep you running.
For a full walkthrough of how underwater prop service works, read our full guide: Can a Boat Propeller Be Repaired Underwater?
Should I Repair or Replace My Boat Propeller?
Most prop damage on recreational boats, including bent blades, dings, and minor corrosion, can be fixed through professional reconditioning at a fraction of replacement cost.
Full replacement is only needed when blades are cracked through, significant material is missing, or the hub has failed. The best approach is to have the prop pulled and assessed by a shop before deciding.
For a full guide on how to make the right call, read our full guide: Should I Repair or Replace My Boat Propeller?
How Long Does Underwater Propeller Repair Take?
Most jobs are completed in three to five days. The underwater removal and reinstallation take a couple of hours each. The rest is shop turnaround for reconditioning. If you have a spare prop, it can be installed during the same dive, so your boat stays in service while the original is being repaired.
For a full walkthrough of the timeline and what affects it, read our full guide: How Long Does Underwater Propeller Repair Take?
What Causes Propeller Damage on Boats?
The most common causes are striking submerged objects, fishing line entanglement around the shaft, galvanic corrosion from depleted zinc anodes, marine growth fouling, and cavitation erosion.
Some happen in an instant while others build gradually. Regular underwater inspections catch both types early, before the damage reaches your drivetrain. For a full breakdown of each cause and how to prevent it, read our full guide: What Causes Propeller Damage on Boats?