Overall length - 35ft 5in.
Extreme breadth - 6ft 4in.
Depth gunwhale to keel - 2ft 10in.
Barges of this type were used for conveying important officials around harbours and from ship to shore and ship to ship.
Sources for research:
NMM draught No. BU (J) 46
Royal Barge Model, NMM Cat. No. SLR 0399
English State Barge, property of U.S. Naval Academy Museum