Ice box overboard drains

[ScottM]

does the water collect on the outboard portion of the ice box? Where is the best place for the drain?

Jim - if the bottom of the ice box is not going to be level with the water line, meaning the box will stay parallel with the curve of the transom cap, you will want to place the drain on the outboard aft corner. If you're making the boxes so the bottom is level with the water line, you should be able to place the drain in the center.