hull sensor (photo by Capt. H. Gale, Met Office)
Hull-attached thermometers provide a very convenient and accurate means of measuring sea-
surface temperature. They are necessarily distant-reading devices, the sensor being mounted
either externally in direct contact with the sea using a "through-the-hull” connection, or
internally (the “limpet” type) attached to the inside of the hull. Both types show very good
mutual agreement, with the ”through-the-hull” type showing a slightly quicker response.
