There are no minifigures, no self-referential bits of whimsy. It's all masts, sails, riggings, and ship's boats, depicted without a hint of irony. But that actually works in its favor – the end ...
His career carried on - and we also have a drawing of a 3-masted ship-rigged sailing vessel, the Cashmere of St Andrews,of which he was Captain at a later point.