who is on the deck of nellie?

THere was the Captain of the ship, Marlow , a lawyer, an accountant and the narrator.

"The Lawyer—the best of old fellows—had, because of his many years and many virtues, the only cushion on deck, and was lying on the only rug. The Accountant had brought out already a box of dominoes, and was toying architecturally with the bones. Marlow sat cross-legged right aft, leaning against the mizzen-mast."