Leith is the historic port for the city of Edinburgh. According to
https://www.heraldry-wiki.com/heraldrywiki/index.php?title=Leith, the arms are blazoned Argent, in the sea Proper, an ancient galley with two masts sails furled Sable, flagged Gules, seated therein the Virgin Mary with the infant Saviour in her arms and a cloud resting over their heads all also Proper. In an Escrol below the Shield is placed this Motto "Persevere". The arms were granted on February 27, 1889.
The arms are placed on a blue shield which bears the motto, and in larger letters, LEITH. The shield is centred on an irregularly horizontally banded field in five shades of blue, some of the stripe with gradational colours.