Modern lifeboats carry their communications aerials as high as possible on the superstructure. In this photograph of the prototype Trent class there are two MF aerials at the side of the upper steering position - one connected to the automatic distress receiver shown in the photograph opposite - with the single, shorter VHP aerial between them. The four-element aerial amidships is for the VHP Direction Finder. A low-profile emergency VHP aerial is fitted to the top of the wheelhouse and is not visible in this photograph..