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DE 38 Fuel Tank Replacement

When we bought our Downeast Cutter 38’ in March 2014 we knew were in for a project. The boat had actually taken on a considerable amount of water partially submerging the engine, flooding the transmission, and fully flooding the aluminum fuel tank in seawater. The seawater had risen to about 18” into the salon between the two sofas. The owners agreed to get the engine running, pump out the water, and clean up the boat. I spent a few months doing various repairs, including a complete transmission removal/rebuild, as the salt water had gotten into some critical parts of the engine room. In the end, the damage seemed worse than it really was. However, after one particular day out, it became evident to us that the fuel tanks were in need of replacement.

The Downeaster 38 has a large Y-shaped fuel tank directly beneath the floor in the galley. The original tank appears to have been made from aluminum and was installed before the furniture was built in an effort to maximize the capacity. Beam-to-beam, the wings on the top of the tank extend as far as underneath the stove and part of the navigation station. Fore to aft, the tank is between the galley sink and the engine room. What’s particularly interesting is that the keel for the boat drops off abruptly into the deep sump under the engine, so the center of the tank is not flat on the bottom. Rather it follows a stair-stepped shape on the bottom to accommodate the keel which protrudes partially into the space below the galley.

Previous Owner’s Sketch of Tank…

 

The first step was to get all of the fuel out of the tank. This was important not only to make it possible to work on the tank, but to […]