The other option, and the one we will be going with, is made by Ronco Plastics. Cape Dory 28', 30' and 36' sailboats all use the same tank so a group of Cape Dory owners got together some years back and had Ronco tool up a mold for them. They still sell the tank, it is listed as an 18 gallon tank (I have no idea where Kracor hides the other 6 gallons as the dimensions for both tanks are within a knat hair of being identical). It is mold B486. I have read accounts from ...<< MORE >>