Technical Specs

Type:
Siemens Martin Steel hulled twin screw steamer with Kauri decking
Naval Architect:
Hugh McRae of the New Zealand Government Railways Department, Dunedin
Builders:
John McGregor and Company Ltd., Dunedin.
Displacement:
329.55 gross registered tons, 155.43 net
Registered Length:
165 feet, 7 inches or 50.47 metres.
Length overall:
168 feet 51.2 metres.
Beam:
24 feet or 7.315 metres
Depth:
9 feet, 6 inches.
Draught:
6.6 feet.
Propulsion:
Twin coal fired triple expansion, jet condensing vertical marine engines producing 500 horsepower at 145 r.p.m.; cylinder diameters, 13 inches (high pressure), 22 inches (intermediate), 34 inches (low pressure); cylinder stroke, 18 inches
Boilers:
Two locomotive-type boilers with double safety valves; grate area, 48 sq. ft.; heating surfaces, 198 sq. ft. (firebox), 1,420 sq. ft. (tubes); working pressure, 180 lb. per sq. in. (reduced to 160 lb. in 1961); steam steering.
Speed (1912):
13 knots normal, 16 knots under forced draught 19 knots maximum.
Average cruising speed:
12 knots (120 rpm at 160 lb. psi).
Bunker capacity:
Initially 12 tons, later expanded to 14 tons.
Coal consumption at cruising speed:
One tonne per hour.
Passenger capacity (1912):
maximum, 1,035; cargo capacity, 100 tons (or 1,500 sheep, or 200 bales

of wool, or 70 head of cattle).

Ship's company :
11
Port of registry:
Dunedin.
Livery:
The 36 feet high funnel, originally Buff, was repainted Red with a Black top in July 1959, as the former light colour soon became smoke-stained. The colour was changed again in June 1962 to light Stone with a Black cap, to conform to the livery adopted for the new Wellington-Picton ferry Aramoana; monograms were added with the letters NZR in Yellow on a Green background on both sides of the funnel.

TSS Earnslaw Cutaway
29 April 2011

 

 

 

 

 

 

TSS Earnslaw orginal plans
29 April 2011

 

 

 

 

 

 

TSS Earnslaw original elevation plans
29 April 2011

 

Other royalty to travel on board have been the King and Queen of Belgium, the Prince of Thailand, the Emperor and Empress of Japan.

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