Custom Repowers & Rebuilds

Repowering a vessel is probably the most difficult and expensive task one can undertake as a boat owner. Getting the old engine out is one thing. We have cut through the sides of steel ships and brought them out on rails, and we have completely dismantled the interior of yachts to get the engines out through the salons. But first a lot of thorough preparation goes into choosing the correct engine and/or transmission package to be installed. Vessel size, propeller, gear ratio, horsepower, ventilation and exhaust requirements are just a few of the factors that have to be taken into consideration. As a certified marine analyst, I have commissioned many vessels where one or more of these specifications were not factored in, causing much grief to everyone involved. A simple thing as improper engine alignment can cause catastrophic damage.

We have had the privilege of performing several repowers, some of which can be viewed in the accompanying photos. Unfortunately not all of them were documented, as time and circumstances did not permit, but it has generally been a rewarding experience. We hope that you will give us the opportunity to provide you with that service if the need arises. You will NOT be disappointed.

Here is a small sampling of some of the engines and/or vessels we have either repowered, refit, or replaced with new engines:

New Engine: 35' Donnelle

35' Donnelle, New Engine

35' Donnelle, New Engine

35' Donnelle, New Engine

35' Donnelle, New Engine

35' Donnelle, New Engine

35' Donnelle, New Engine

35' Donnelle, New Engine

35' Donnelle, New Engine

35' Donnelle, New Engine

35' Donnelle, New Engine

35' Donnelle, New Engine

35' Donnelle, New Engine


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New Engine: 50' Millenium

50' Millenium, New Engine

50' Millenium, New Engine

50' Millenium, New Engine

50' Millenium, New Engine

50' Millenium, New Engine

50' Millenium, New Engine

50' Millenium, New Engine

50' Millenium, New Engine


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New Engine: Deutz 1013 6 Cylinder

Deutz 1013 6 Cylinder

Deutz 1013 6 Cylinder

Deutz 1013 6 Cylinder

Deutz 1013 6 Cylinder

Deutz 1013 6 Cylinder

Deutz 1013 6 Cylinder

Deutz 1013 6 Cylinder

Deutz 1013 6 Cylinder


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These next two projects were probably the most challenging. On the 48 Bertram, we rebuilt and modified the engines, installed new transmissions with electronic controls and trolling valves, replaced the exhaust system, upgraded all the battery wiring, and made frame and mount modifications. The end result far exceeded our expectations, as the vessel gained almost 6 knots on the top end. The 165’ Dona Martita was a 7 month project that required the cooperation of several different companies. While new generators, electrical systems, controls, plumbing, exhaust, and monitoring systems were being installed, we performed major repairs to the two 3516 Caterpillar engines and Cat 7271 gears. We performed the final alignment and set the engines in Chockfast mounts, made connections to all the support systems, and performed the final sea trials. The last picture in the sequence shows the vessel towing another vessel with a Fairbanks-Morse engine in reverse, demonstrating the power of the Cats.

Refit: 48' Bertram

Refit: 48' Bertram

Refit: 48' Bertram

Refit: 48' Bertram

Refit: 48' Bertram

Refit: 48' Bertram

Refit: 48' Bertram

Refit: 48' Bertram

Refit: 48' Bertram

Refit: 48' Bertram

Refit: 48' Bertram

Refit: 48' Bertram

Refit: 48' Bertram

Refit: 48' Bertram

Refit: 48' Bertram

Refit: 48' Bertram

Refit: 48' Bertram

Refit: 48' Bertram

Refit: 48' Bertram

Refit: 48' Bertram

Refit: 48' Bertram

Refit: 48' Bertram

Refit: 48' Bertram

Refit: 48' Bertram

Refit: 48' Bertram

Refit: 48' Bertram

Refit: 48' Bertram

Refit: 48' Bertram

Refit: 48' Bertram

Refit: 48' Bertram

Refit: 48' Bertram

Refit: 48' Bertram

Refit: 48' Bertram

Refit: 48' Bertram

Refit: 48' Bertram

Refit: 48' Bertram

Refit: 48' Bertram

Refit: 48' Bertram

Refit: 48' Bertram

Refit: 48' Bertram

Refit: 48' Bertram


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Rebuild Engines: 165' Dona Martita

Rebuild and Repower: 165' Dona Martita

Rebuild Engines: 165' Dona Martita

Rebuild and Repower: 165' Dona Martita

Rebuild Engines: 165' Dona Martita

Rebuild and Repower: 165' Dona Martita

Rebuild Engines: 165' Dona Martita

Rebuild and Repower: 165' Dona Martita

Rebuild Engines: 165' Dona Martita

Rebuild and Repower: 165' Dona Martita

Rebuild Engines: 165' Dona Martita

Rebuild and Repower: 165' Dona Martita

Rebuild Engines: 165' Dona Martita

Rebuild and Repower: 165' Dona Martita

Rebuild Engines: 165' Dona Martita

Rebuild and Repower: 165' Dona Martita

Rebuild Engines: 165' Dona Martita

Rebuild and Repower: 165' Dona Martita

Rebuild Engines: 165' Dona Martita

Rebuild and Repower: 165' Dona Martita

Rebuild Engines: 165' Dona Martita

Rebuild and Repower: 165' Dona Martita

Rebuild Engines: 165' Dona Martita

Rebuild and Repower: 165' Dona Martita

Rebuild Engines: 165' Dona Martita

Rebuild and Repower: 165' Dona Martita

Rebuild Engines: 165' Dona Martita

Rebuild and Repower: 165' Dona Martita

Rebuild Engines: 165' Dona Martita

Rebuild and Repower: 165' Dona Martita

Rebuild Engines: 165' Dona Martita

Rebuild and Repower: 165' Dona Martita

Rebuild Engines: 165' Dona Martita

Rebuild and Repower: 165' Dona Martita

Rebuild Engines: 165' Dona Martita

Rebuild and Repower: 165' Dona Martita

Rebuild Engines: 165' Dona Martita