I drew a comparison between the Hawke Lightfloat and a small lightship, but here we have the real thing.  Officially known as the "Humber Conservancy Board Lightship 12 - Spurn", for the sake of brevity she is more normally referred to as the Spurn Lighthship.  She was built in Goole in 1927 and served for almost 50 years as an active aid to navigation at the mouth of the Humber.  Crewed by 7 men (later reduced to 5), she served first on the Spurn Station, four and a half miles east of Spurn Point and then, in 1959, she was moved to the Bull Shallows Station just of the point itself.  She was decomissioned in 1975 and laid up until being acquired by Hull City Council in 1983.  She was then restored and, in 1987, was moored in Hull Marina where she is open to the public and serves as a museum.  Daily guided tours are run from April to September and admission is free.