I think you are right....
The first boat offered is indeed a Gato! But I thought "Drum" was also a type. Now I understand that "Gato" is a type and "Drum" will be the name of one of the many boats of the Gato type.
However, if someone chose the Gato type, how did Bubblehead1980 find the ship's name "Drum" somewhere. So, where do I find a ship's name?