1

Roll 1d6+1 harpies descend on the ship and attempt to fly off with any humanoids on deck.

2

A storm rocks the boat. A sailing check of 15 or over is required to navigate through it, else the boat takes Roll 3d8 damage.

3

The wreck of another ship drifts slightly out of your path. It appears to have been sunken by pirates, but an investigation check of 16 and higher reveals a lock-box containing 30 gold.

4

A lifeboat is spotted in the distance. Upon investigation it holds a sunburned half-elf, a former captain who'd been mutinied against.

5

A Triton soldier appears on the waves, and gives warning of any dangers in the area.

6

A school of flying fish assail the boat. They don't do any damage but end up all over the deck.

7

A fire breaks out in the cannon room. If it's not stopped within 10 minutes, an explosion of Roll 3d6+4 fire damage rocks the ship and any creatures within a 20-foot radius of the room.

8

Rough winds blow the ship. Anyone in the crow's nest must make a strength saving throw of 14 or higher, else be tossed onto the deck of the ship.

9

Next time your party attempts to raise anchor, it fails. It has become stuck to the ocean floor.

10

Hungry sharks trail the boat, though it is unclear why.