This has been discussed many times. Do a search (upper right) for buoyancy.
https://forum.solidworks.com/message/124999#124999
Supposedly there is a submersed pipe element in the Geostar product you get with simulation premium. I have heard that is supports linear wave theory and the Wheeler decay function.
ICheck the help......& good luck
This has been discussed many times. Do a search (upper right) for buoyancy.
https://forum.solidworks.com/message/124999#124999