SISSONS Quadruple Expansion Marine Engine
Cylinder dimensions:
6” + 8½” +12″ + 16½” x 12” stroke
The ultimate medium sized marine engine…
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HARRISON & Co. Compound Marine Engine
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6″ + 12″ x 7″ Cylinders with Slide Valves, on six turned columns. With attached air, feed and bilge pumps.
A high quality launch engine. For sale unrestored, but believed complete. Offered with spares for second engine.

COMPOUND Steam Launch Engine 2″ + 5″ x 6″
2″ + 5″ x 6″ Cylinders
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Wt est 250 Kg.
An early marine steam engine of elegant design.
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Duplex Marine Engine
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TWIN HIGH PRESSURE Marine Engine
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29″ High, Base 12″ x 12″.
Solid disc flywheel.
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MUMFORD Ciculating Pump Marine Engine
By A G Mumford, Engineers of Colchester.
A marine circulating pump steam engine with attached, clutchable oil pressure pump for oil firing. From a harbour service launch (HSL).
For sale in good, original condition.
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US Navy Compound Marine Engine
A small marine engine probably designed for coastal craft and built for the US Navy.
5 3/4″ + 12″ x 8″ compound cylinders.
“Type M”
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REIDS Twin High Pressure Marine Engine
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2.5″ + 2.5″ x 4″ Cylinders
Slide valves with link reversing gear.
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OUTRIDGES PATENT Rotary Steam Launch Engine
This is an extremely rare, vane type reversable steam engine of around 4 – 5 H.P. believed made to Outridges patent in the mid 1880’s.
Designed for small, high speed river launches, these rotaty engines were claimed to provide an excellent power to weight ratio and to achieve the then unheard of speed of 12 1/4 m.p.h!








