"The Gate Ship at Granton- Painted scarlet to indicate the port entrance through one of the barriers across the Firth of forth" image: A view of the entrance to the Firth of Forth, marked by a gate ship painted bright scarlet in the middle of the composition. There is another vessel with large masts immediately behind it, passing through the entrance. There are barriers in the water either side of the two ships, with the snow-covered coastline visible in the background.