Coat of arms of the feudal Earls of Caithness: Azure, a three masted ship or flagged gules under sail argent (Montague-Smith, P.W. (ed.), Debrett's Peerage, Baronetage, Knightage and Companionage,  Kelly's Directories Ltd, Kingston-upon-Thames, 1968, p.206 "Earl of Caithness"), as quartered (in the 4th quarter) by Sinclair, Earl of Caithness
Own work, using ship from File:Arms of the Earl of Caithness.svg by User:MostEpic
Lobsterthermidor (talk) 10:11, 28 August 2023 (UTC)