When your boat has sailed its last season, and it doesn't have enough residual value to be worth selling secondhand, it's considered a junk boat. If you're ready to get rid of your junk boat, you can't just leave it on the curb with the trash. You'll need to contact a local landfill or a boat salvage yard to dispose of your old boat safely and legally. You may also get a little cash for the parts that you can strip and save.