I want to know how I can incorporate sailing into a 5e campaign. The main problem I'm having is that I can't find any rules for ship sailing or ships themselves anywhere for 5e. The only rules I have are from Pathfinder, the skulls and shackles pathfinder adventure My question is would I be able to bring those Pathfinder rules over to 5e?
You probably could, but you don't really need to. D&D 5e has rules for sailing on pages 117-119 of the Dungeon Master's Guide.