Well Done Arden !!!!
The frigate was sent out - and found Nautilus.
Jules Verne's steam yacht was sold to sail in Croatian waters.
In the same novel ( not 20,000 Leagues ) ...
Which fictional vessels are we?
Captain Nils Larson and a crew of 12
Master Jon Jacobson and a crew of 14
I won't ask for the main character's vessel as that would be too easy.