Mickey is performing routine maintenance on his tugboat (with interference from a pelican) when a call comes on the radio that there’s a sinking ship needing assistance. Sadly, Mickey’s crew consists of Donald and Goofy, so getting underway to help is not easy. Goofy has to fight a boiler’s door to get it stoked with coal (and when he succeeds, he overfills it) and Donald gets tangled up in the machinery. Not to mention that nobody casts off, so they drag half the dock along with them. The overworked boiler soon explodes. —IMDb
Animator/director Clyde Geronimi got his start as an animator at the Hearst studios in New York. He was hired by Disney studios in 1931 and directed his short cartoon, Beach Picnic in 1938. Eventually Geronimi began working on Disney animated features and helped direct such classics as Cinderella, Sleeping Beauty, and Alice in Wonderland and went on to win an Oscar for helming the Disney animated short Ugly Duckling. In the ’50s and ’60s, he moved into directing Disney television shows. —AllMovie guide
Goofy is actually the focal point of this one, and that's okay because his antics with the coal are quite funny. The animation is fine, another enjoyable time was had with Mickey and friends.