An Indiaman and a Two Decker Hove to, Said to be Thomas Dumar, Esq. in H. M. Ship 'Portland' Delivering the Leeward Island Convoy, in 1776 Inscribed on floating plank of wood, lower left: 'Thos Dumar Esq in H. M. Ship Portland delivering the Leward Island Convoy to Alexr Watt [? ] of the ship Thames. June 1776. ' Signed and dated in black paint, lower left: 'T Luny 1796', Thomas Luny, 1759-1837, British