pf2e.fyi
From Pathfinder Lost Omens Hellfire Dispatches, which isn't enabled.

Boarding Party

FEAT 8

You're practiced at scaling ships, and even a wet and slippery exterior won't stand in your way. You can Climb a sea vehicle even if you have one hand occupied. If both your hands are free, you gain a +2 circumstance bonus to your Athletics check. You aren't Off-Guard while Balancing or Climbing on any part of a sea vehicle.

Pathfinder Lost Omens Hellfire DispatchesORC