The boat is the only still life with 5 cells and was discovered by the JHC group in 1970. It can be thought of as a tub with an extra cell in one of the corners, or a ship with one of the corner cells removed. Like the tub and the ship, it is infinitely extensible (see long boat).
The boat can be hit by a glider to cleanly produce another glider, travelling perpendicular to the direction of the input glider. It is thus a one-time reflector.
The boat is the fourth most common still life in Achim Flammenkamp's census, being slightly less common than loaf and over four times as common as tub. It is also the sixth most common object on Adam P. Goucher's Catagolue.