Go check out the faction and all their back-story and stats on the Kickstarter page.
From the campaign:
1. Two Deck Guns??! Two Boats, and one of them is a Gunnery! Now, to answer the first question that comes to your mind. No, they do not get 2 full Deck Gun shots each turn! With more shots spread out that means a smaller payload. What this does mean, however, is that by destroying one of their Deck Gun Objectives it only causes their shots to lose half its strength, meaning you'll have to take both down to avoid getting bombarded each round!
2. Non-linear Deckhand Movement??! What Madness is this??! Turns out the Brise (and Mazu!) Deckhands and Bosuns are a bit more trained than their Wellsport/Bone Devil counterparts, and have mastered the ability to turn... Albeit slightly. When they deploy, they will immediately move onto the Objective they are next to (thus guarding it!) and then proceed forward to take down the enemy points.
3. Four Deployment Points??! Again, two boats! What this translates to in game terms, however, is that when Deploying Deckhands, the Brise player must select 3 Deployment Points to be used, meaning that, potentially, you could double up your defense on the Gunnery ship, but that would leave you open on your other ship... You still choose where your Bosuns go, however!