For best results and the longest lasting SS tank look for a 'code'
welder. Then insist on 'full penetration' welds. If the tank sits in
the bilge where it will be subject to corrosion, etc., consider to have
the exterior welds ground and polished, then the whole thing passivated
and or polished ..... or even electropolished. Depends on you budget
and how long you want the tank to last.

In article , nobody
wrote:

Does anyone know of a stainless tank fabricator in Florida. I need to
replace the port water tank on a Morgan OI 41. Florida east coast
would be my choice as it's a fairly large tank and shipping might be
costly. Any suggestions appreciated. Thanks