Assuming you are referring to a monthly boat payment, there is no such thing as a typical boat payment since the amount will vary depending on the price of the boat, the loan interest rate, and the loan term. However, using BoatUS's Boat Loan Calculator, we can get a general idea of what someone might expect to pay for a boat loan.
For example, let's say you finance a $20,000 boat with a 4% interest rate over 60 months. Your monthly payments would be approximately $377 per month. Of course, this is just an estimate and your actual payments may be higher or lower depending on your specific situation.