From publisher blurb:
This scenario is an excellent way to start your adventures in the Dread Sea Dominions.
It is designed for a party of four Seasoned characters with 20 XP, but it can be easily altered to fit more powerful or numerous groups.
It includes a variety of situations: social interactions (Persuasion and a good Charisma could be
very useful there), some good old-fashioned breaking and entering (Lockpicking and Stealth), a dangerous sea voyage (Boating) and a number of combats (any combat skill).
In addition, having a character with some Knowledge (Arcana) could give some extra insights to the party.
Although all the Skills above are useful, they are not essential to complete the adventure successfully.