MarineEngine.com does not offer troubleshooting assistance or repair advice by email or by telephone.
You are invited to join our public Boat Repair Forum to seek assistance from other members.
You may also visit the Boat Motor Manuals section of our site to obtain a service manual.
It has the tank under the deck. Could be the hulls were used in other configurations.Those are probably for side tank installation so that the tank doesn't chafe on the molded strake. Or perhaps for some aspect of the construction. Dunno