The great ship (which is the proper name for this kind of large merchantman) is painted on the north wall of St Dunstan's Snargate, Romney Marsh. It dates from c.1500- give or take 20 years. According to local tradition, a picture of a ship- placed so as to be visible from the south door- was a sign to those in the know that the church that contained it was a safe place to stash smuggled goods.
(Information from R.S. Sharman's "A Guide to the Parish and Church, Snargate, Kent)