A late 90's view of SS Explorer in Leith Docks, Edinburgh. HMY Brittania was across the harbour laid up before opening to the public if that helps with the timescale.

Built and fitted by Alexander Hall and Company Ltd, Aberdeen, Yard No 747; Riveted Steel Cruiser Stern

Length Overall : 202 Feet
Length Between Perpendiculars: 183ft 6 inches
Beam 32ft 9inches
Loaded Draft forward: 10ft 11"; aft 16ft 7"

Tonnage
Gross: 862
Net : 225

Deadweight 471 Tonnes
Lightship Displacement 915tons

Engine: Built 1955 by ALexander Hall, Engine Number 462; Triple expansion, 3 cylinder, 16.5" + 28.5" +47" * 30"; 1000 indicated Horse Power
Piston Valves on HP cylinder, Slide Valves on IP & LP cylinders
HP cylinder crosshead driven Boiler Feed and two Bilge Pumps

Propeller 10'8" *11'3", 4 Bladed
Speed 12knots
Range 8000miles(approx)

Bunker Capacity - 267tons fuel oil; 34 tons diesel oil
Fresh water Storage : 113tons