Sad to say the the least, I feel for you.. I lost a little chihuahua at 8 years old, That dog spent more time on the boat than anyone, Her and big chihuahua and a pomeranion spent countless hours on my boat at the vineyard, cuttyhunk and bassets, Yes I had big dogs and hunting dogs in my day also!
I can relate! They probably loved going on the boat, they never complained or bitched and were always happy to be with you!
Hoop, literally went everywhere I went without exception. His loss was jarring. They always break your heart in the end, don’t they! I got another yellow about a year later and while he’s a good dog he’s very different.