Name: Grosse Jacht
Ability: This ship gets +1 to her cannon rolls against Pirate ships. If you roll a 6 when shooting, you may take another shoot action.
This should be limited to once per turn, so it can’t be infinitely chained with lucky rolls. It might be a minor issue on a single-mast ship, but imagine it being copied by a 10-master, or even a 5-mast ship. It should also be clarified that it gives a single shoot action if any sixes are rolled during the first action, not a shoot action for each six rolled.
Granted, the two-action limit would be assumed to apply to this, preventing multiple shoot actions, but it’s still good to clarify it further to remove any doubt.
Name: The Black Baron
Ability: Limit. Ransom. Captain. Loyal: Germany; Hostile: Pirates. This ship gets +1 to her boarding rolls against the Pirates. If this ship succeeds at both its ramming and boarding rolls against another ship, roll a d6. On a 5, eliminate all crew from the enemy ship. On a 6, you may capture the enemy ship, even if she is not derelict.
The six roll on this one feels right on the edge of being game-breaking. Get this character on a 10-masted ship with a re-roller and you can potentially grab almost anything else without much of a fight. Testing would definitely be needed to be sure, but no one is going to enjoy watching their fully-loaded warship get stolen and immediately turned against them after a single lucky die roll.