Esteren-Deargh is marvelous for melancholy music. Dragon Heist’s Trollskull Manor has several good musical tracks: investigative, suspenseful, and dark may all be of use to you. Stony Beach has waves lapping at pebbles and whatnot, while High Seas has a ship in various states (doldrums, in a brisk wind, in a storm) as well as below deck. For weeping and wailing, Haunted Heart has some, and Elements - Horror has one element called “souls in grief” which has good crying as well. I don’t know who died, but Abandoned Lunatic Asylum has several elements of a woman going, “I love you.” “Mom, I love you” etc.
I don’t know if you’re doing the shrouded corpse over the side of the ship into the sea funeral or the burning-boat Viking type, so I’ll recommend for both. Underwater Dungeon has a one-shot called Splash, which is one big splash, good for a body going into the sea. Elements - Fire has all the fire sounds one could want, and the universal one-shots have bowshots, should you need them.
I hope that helps!