A Lymphad or galley is a charge used primarily in Scottish heraldry. It is a single masted ship propelled by oars. In addition to the mast and oars, the Lymphad has three flags and a basket. The word comes from the Scottish Gaelic long fhada, meaning a long ship or birlinn. It usually indicates a title associated with islands, such as Lord of the Isles, specifically those on the west coast of Scotland, including the Hebrides. Also, it is not limited to Scottish arms: prominent examples including the coats of arms of New Zealand and New Brunswick.
Although the drawing of the lymphad for heraldic design purposes naturally became standardized, there are minor differences. These usually involve the position of the sails and oars and the tincture of the flags. There are other variations as well, such as the tincture of the ship. Additionally, the basket may be afire and a crew may be depicted.
Undifferenced arms of the Earl of Arran
Somerville-MacAlister of Loup and Kennox
The Captain of Clan Chattan field: Or, lymphad: Azure, sail furled, oars shown in saltire over the boat, flags Gules.
Lordship of the Isles field: Or, lymphad: Sable, sail furled, oars in action, flags Gules.
MacAlister of the Loup The lymphad is shown on an eagle's breast, Gules, lymphad Sable, sail furled, oars in action, flags Sable.
Macdonald, Lord of the Isles field: Or, lymphad Sable, sail furled, oars in action, flags Gules, with an eagle displayed on the boat.
MacDougall of MacDougall field: Or, lymphad Sable, sail furled, oars in action, flags Gules, with a fire basket fired on top of the mast.