Historical information

The ship’s communication system that was used from the late 19th century to early-to-mid-20th-century is called an Engine Order Telegraph (E.O.T.) or ship’s telegraph. The system has two parts, the Bridge Section and the Engine Room Section. The Bridge Section is usually mounted on top of a pedestal, and the Engine Room Section is often attached to a vertical surface. The standard commands printed or stamped onto the dial are the directions of AHEAD and ASTERN, and the speeds of STOP, SLOW, HALF, and FULL.

The ship’s pilot on the Bridge of a vessel sends his Orders for speed and direction to the to the Engine Room with the E.O.T. He moves the lever or levers, depending on the number of engines the ship has, to change the indicator on the Bridge Section’s dial to point in the new direction and speed of travel. This change causes the Orders to be duplicated on the Engine Room Section’s dial and a bell to signal the change at the same time. The engineer then adjusts the ship’s engines and steering equipment to follow the pilot’s Order.

The manufacturer, A. Robinson & Co. Ltd of Liverpool, established his business in 1780 and continued until 1968 when the business was purchased by marine products maker Chadburns, established in London in 1870.

Significance

This Engine Room section is part of a ship's telegraph communication system and represents marine technology used in the late-19th to mid-20th-century.

Physical description

Engine Room Section of a ship’s telegraph or Engine Order Telegraph (E.O.T.). The round brass dial has inscriptions stamped around its edge and centre. Red inlaid glass plates have inscriptions in white paint on them. The inscriptions are nautical terms for direction and speed and include the maker’s details. A rotating pointer is joined to the centre of the dial. The maker is A. Robinson & Co. Ltd of Liverpool.

Inscriptions & markings

Stamped: “FULL / HALF / SLOW / STOP / FULL / HALF / SLOW / STOP”, “AHEAD / ASTERN”
Printed: “FULL / HALF / SLOW / STOP / FULL / HALF / SLOW / STOP”
Stamped on the dial: “A. ROBINSON & CO. LTD / MANUFACTURERS / LIVERPOOL”