- Joined
- May 11, 2019
- Messages
- 3,881
- Location
- United States
- Vessel Name
- Muirgen
- Vessel Make
- 50' Beebe Passagemaker
I am going to have to open up one of our fiberglass diesel fuel tanks. I doesn't currently have any inspections ports. The tank is 650 gallons, no baffles, integral on the outside with the hull, and 1/2" to 3/4", braced FRG everywhere else. They are 43 years old, and the starboard aft fuel tank seeps fuel into the bilge when filled over about 200 gallons. I have an idea of where the leak is on the outside, but feel the best solution would be to access the inside of the tank, thoroughly clean the fiberglass, and use an aviation type fuel tank sealer to seal the seep.
I have found only one source for diesel fuel tank inspection ports, and am considering the following port, 14" diameter (12" usable), in aluminum. Has anyone had experience with this company, or can they recommend another company?
www.fisheriessupply.com
I'm also considering the use of the following to seal the tank:
Pilot Supplies and Aircraft Parts | Aircraft Spruce seal the tank. Does anyone have any PERSONAL, FIRST HAND experience with this product? (No offense, but I'm not interested in what your wife's boyfriend's cousin's hairdresser has to say)
I have found only one source for diesel fuel tank inspection ports, and am considering the following port, 14" diameter (12" usable), in aluminum. Has anyone had experience with this company, or can they recommend another company?
SeaBuilt APS-14 | Fisheries Supply
Save More on Your SeaBuilt #APS-14 Tank Access Plate System - Aluminum, 14" Aluminum at Fisheries Supply. Excellent Customer Service, Ready to Ship. Marine Supplies Since 1928!

I'm also considering the use of the following to seal the tank:
Pilot Supplies and Aircraft Parts | Aircraft Spruce seal the tank. Does anyone have any PERSONAL, FIRST HAND experience with this product? (No offense, but I'm not interested in what your wife's boyfriend's cousin's hairdresser has to say)