I wonder if the Portuguese Water dog can be trained and used to untangle
lobbers pots rope and fishing net wrapped around your propeller?

Background: From Wikipedia encyclopaedia: Originating back to the 1500s in
Portugal these dogs were used to send messages between boats, to retrieve
fish and articles from the water, and to guard the fishing boats. (They
often received a portion of the catch after a job well done, too!) They
helped to bring in nets and to save fishermen when they fell in the water.

May be some of the cruisers already have a Portuguese Water dog and want to
share their experience with that breed of dog for cruising.