Go around the ice rocks, pressing the Walk button to avoid sliding into the water. Take standing jumps if necessary to clear the angled ledges. Having the ship on your left, locate the low ledge on the opposite side. Jump into the water and quickly climb on this ledge.

Continue forwards and notice another low ledge on the opposite side and a bit to the left. Again, jump into the water and climb on this ledge.

Head to the right and climb up the blocks to reach the topmost, beneath the handholds.

Jump up to grab the handholds and shimmy across. Drop to the ledge almost at the end and jump oto the ship.