Sidewall-suspended boat cooler

A sidewall-suspended boat cooler comprising:

• a container and a lid;
• wherein the container and the lid are insulated to maintain the temperature of items placed within the container;
• wherein the container has an asymmetric layout comprising a front compartment and a rear descending wall overhang where the front compartment and the rear descending wall overhang are separated by a U-shaped space that mates with a gunwale or sidewall of a vessel;
• wherein the container comprises a front wall, a rear wall, a left wall, a right wall, and a bottom;
• wherein the front wall, the left wall, the rear wall, and the right wall are vertically oriented walls that couple to each other to surround the container;
• wherein the tops of the front wall, the left wall, the rear wall, and the right wall define an access opening through which the items are placed into or removed from the container;
• wherein the bottom comprises an upper surface, a lower surface, and a transition wall;
• wherein the upper surface is a horizontally oriented surface that couples to the rear wall, the left wall, and the right wall.