How Long Does Underwater Propeller Repair Take?
From first inspection to reinstallation, most underwater propeller jobs are completed within three to five days. The underwater portion of the work, pulling the prop and reinstalling it, takes a couple of hours on each end. The time in between is shop turnaround for the reconditioning itself.
Barnacle Busters handles the dive side of the process and coordinates with certified reconditioning shops to keep the turnaround as tight as possible.
The Dive Work Is Fast
Removing a propeller underwater typically takes under an hour for a standard recreational boat. The diver uses a hydraulic prop puller matched to your shaft size, which applies controlled pressure to slide the prop off the taper without damaging the shaft or keyway. Reinstallation takes a similar amount of time: seating the prop, torquing the nut to spec, and confirming everything is aligned.
For boats with twin props or larger shafts, the dive time is longer but still measured in hours, not days. The diver handles everything at your slip, so there's no transit time to a yard.
Shop Turnaround Is the Variable
The reconditioning itself is where the timeline varies. A straightforward job, straightening a couple of bent blades, restoring the pitch, and balancing, might be back in two days. A prop with more extensive damage, material loss that needs welding, blade edge restoration, or hub work, could take four or five days.
The National Marine Propeller Association represents professional prop shops across the country and promotes standardised repair practices. Shops that follow these standards use precision equipment like pitch gauges and computerised balancers to verify the repair meets factory tolerances.
That process takes the time it takes, but it ensures the prop comes back right.
Keeping Your Boat Running During the Wait
If you have a spare propeller, Barnacle Busters can install it during the same dive visit when the damaged prop is removed. That means your boat is back in service the same day while the original is being reconditioned. Many boat owners who rely on their vessel for regular use keep a spare on hand for exactly this reason.
If you don't have a spare, the boat stays at its slip during the turnaround. There's no yard time, no blocking fees, and no crane charges. You're only waiting on the shop, not on boatyard scheduling.
Emergency Situations
Barnacle Busters operates a 24/7 emergency service line. If you've damaged a prop and need to get back on the water urgently, we can often arrange a same-day dive to assess the situation and install a spare if one is available. For boats in the islands, we've even flown divers out with spare props to handle reinstallation on location.
If your prop needs attention, contact Barnacle Busters to schedule a removal and inspection. We'll give you a realistic timeline before any work begins.