A transom is a flat, vertical structure at the stern, or back of the boat). It is typically rectangular and sits at the very end of the boat. Its height can vary, but it usually acts as a sort of wall to the back of the boat. Most motors are attached to the transom, which can make it easy to identify. The transom is a fundamental component of boat design and most boats will have one. It reinforces and supports the back of the boat. The transom is relatively easy to spot, as it is the flat or curved surface that takes on the waters resistance at the stern of the boat.

The transom is important because it serves multiple purposes, from providing protection against water resistance to acting as a platform for various components. Over time, stress from the motors can cause cracks to form on the transom that water leaks into. As more water enters, the transom can rot. To care for your transom, check it regularly for cracks and peeling seals. If you suspect its wet, get a professional to take a sample. The best way to repair a damaged transom is to replace it.