Fuel Tank Plumbing for My Solo Circumnavigation
25 February 2026 · 31 min · 8K views
Hand adjusts brass fuel valve aboard sailing vessel
What this video covers
A Pacific SEACRAFT 37 owner upgrades the fuel system to accommodate a secondary diesel tank for a planned solo circumnavigation. The project involves removing, cleaning, and repainting the primary fuel tank with zinc and bilge paint, then installing a dual-tank selector manifold to manage feed and return lines for both the primary and the future secondary tank.▶ 1:17 The owner replaces all original fuel fill and vent hoses, standardizing on 5/8-inch diameter hose for the fuel tank vents.▶ 8:03 Routing the new lines requires drilling through existing bulkheads and securing hoses with temporary zip ties before final installation.▶ 9:40 The plumbing configuration routes fuel from the tanks through the selector to a Raymarine-compatible fuel system, eventually leading to the engine.▶ 18:10 The owner notes that proper application of thread-seal tape in a counterclockwise direction prevents the tape from unraveling during fitting installation.▶ 23:55
Boats in this video
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