Second sloop. There is also a ladder on the eastern side of the Compass room's islet that will make it quicker getting from the northern vault and eastern vault back to the compass room. Some reccomend taking a chest to make the medallions easier to transport. (Ymmv, you're walking the entire time if you use a chest plus you have to find one first...) If you're doing 2 back to back, the door for the broken statue stays open, and you can double collect all the medallions and the gold holder coin to make the 2nd, 3rd etc. runs faster, but you do have to sail all the way back to Morrows Peak for the Tale restart. The vault solutions are always the same. I wrote them down on my first run- I listed them below. Spoiler alert lol.
Spoilers:
Kraken vault (northern) pillars will be snake, then the set or three.
Boat vault (western) is Kraken, shark, turtle, torch from left to right order.
Shark vault (southern) will be the groups of symbols in the TT book, again left to right, but I didn't write down the symbols used for each group.
Good luck, good wind, and good glory!!! 🧜♀️