UNderwater welding

[sennafan]

What is the maximum size of a single pass fillet weld made under water (25' or so depth)? Also, what is the maximim size of a multi-pass underwater weld? Just had a contractor telling me the maximum underwater weld size is 1/8". I've never heard this before, but it is not my area of expertise.

Thanks

 

[hydromarine]

Is this a wet wet or dry weld i.e habitat?