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matching marine instruments
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Flagstaff Hill Maritime Museum and Village
Instrument - Chronometer or Marine Clock
... technology latitude marine navigation mechanical instrument ...This chronometer was made around 1936 and has been on display at Flagstaff Hill for over 40 years as part of the exhibit of the ‘Reginald M’, an Australian-built, 19ss, coastal trader vessel. A chronometer is an accurate mechanical instrument used for measuring time. It is constructed carefully to remain stable even under the changing conditions of seafaring life such as temperature, humidity and air pressure. The Master or Navigator of a ship could use the chronometer and the positions of celestial bodies to calculate the ship’s latitude at sea. In 1905 the business Chronometerwerke GmbH was formed in Frankfurt, Germany, to supply the country with high-quality mechanical chronometers and ship clocks for their maritime trade, making the country independent of other international suppliers such as those in England. In 1938 the firm was renamed Wempe Chronometerwerke. The business continues today. Its products now include its well-known chronometers, battery-powered ship clocks, ship’s bell clocks, barometers, barographs, thermometers, hygrometers, comfort meters to measure temperature and humidity, and wristwatches. The company also performs chronometer testing facilities for the State’s Weights and Measures office. The article written by Givi in July 2022 “The Basics of Marine Meteorology – a Guide for Seafarers” refers to the weather’s signs and patterns being repeated over and over, and the recording of these observations helps forecasters predict changes in the weather. The chronometer is an example of a mechanical navigational marine instrument in use in the early to the mid-20th century. The maker is significant as part of a German government initiative to be self-sufficient in the production of good quality marine technology. This chronometer is significant as part of the exhibit, the Australian-built vessel, 1922 coastal trader ‘Reginald M’, listed on the Australian Register of Historic Vessels and on display for over 40 years.Marine chronometer or marine clock, brass case, glass cover, Roman numerals, 24-hour numbers beside them. Two black hands, a keyhole for winding and ventilation holes in the side. The base has a collar with four machined mounting holes. Inscriptions are on the clock’s face."Made in Germany" and "WEMPE / CHRONOMETERWERKE / HAMBURG"flagstaff hill, flagstaff hill maritime museum and village, warrnambool, maritime museum, maritime village, great ocean road, shipwreck coast, marine meteorology, horology, chronometer, marine technology, latitude, marine navigation, mechanical instrument, scientific instrument, ship clock, chromometerwerke gmbh, wempe chronometerwerke, marine clock -
Flagstaff Hill Maritime Museum and Village
Equipment - Ship's Wheel, John Hastie et al, Early 20th Century
... Steering gear Marine Equipment instrument navigation Inscription ...John Hastie Engineer and millwright John Hastie opened small manufacturing works in Greenock in 1845 and 1853 patented the first self-holding steering gear. The firm became known as John, Hastie and Co. Ltd. in 1898 after taking on limited liability status and their main works were at Kilblain Street, Greenock, where they specialised in ships' steering gear. The company also occupied works at Rue End Street, Greenock. Plans of this unit depict a stockyard to the east, with areas for welding; fitting and assembly; flame, cutting and fabrication; and a machine bay. The company was dissolved in 1991. Brown Brothers Brown Bros Rosebank Ironworks made the steering gears for many large ship's, including The Titanic. Andrew Betts Brown the founder was born in 1741 and closely associated with many improvements in marine engineering. He was educated in his native city and served his apprenticeship as an engineer in the locomotive works of the North British Railway Company at St. Margaret's. During his apprenticeship, he attended the evening classes at Watt College. subsequently going to Manchester to study chemistry. He went to London around 1863 and took over an old brewery, which he converted into an engineering works. During his time there he invented an overhead travelling crane, which was used on the construction of Blackfriars Bridge London. He went on to develop plant which used steam and hydraulic power for discharging ships as a result the company was contracted to install this equipment in Hamburg Docks. By around 1870 he continued to construct machinery in London but realised that conditions were more favourable in Edinburgh. He acquired land at Rosebank adjoining the North British Railway Company's line to Granton, and the necessary infrastructure was completed allowing him to finish the Hamburg contract. The works at Rosebank were eventually extended and added to until they became one of the largest engineering works in the East of Scotland. Mr Brown was a member of numerous engineering institutions, the best known at the time being the Institution of Naval Architects. He was also a Fellow of the Royal Society of Edinburgh, a member of the Institute of Mechanical Engineers and of the Institution of Marine Engineers he died in 1906 at the age of 67.An item made by two marine innovators of marine auxiliary machinery, equipment and itemsShip's wheel, brass, attached to brass pillar. The base has six holes in it for securing it in place. Top of the ship's wheel pillar has a brass, adjustable arrow pointer that is positioned over a dial etched into the flat brass surface. The dial reads " PORT STABD". Lines and degrees are marked, with '0' in centre and every 5 degrees, from 0-35, in both Port and Starboard sidesInscription to wheel hub "Brown Brothers & Co. Ltd, Rosebank Ironworks, Edinburgh"flagstaff hill, warrnambool, shipwrecked-coast, flagstaff-hill, flagstaff-hill-maritime-museum, maritime-museum, shipwreck-coast, flagstaff-hill-maritime-village, john hastie, john hastie, andrew betts brown, ships wheel, ship steering gear, marine equipment, instrument, navigation -
Flagstaff Hill Maritime Museum and Village
Equipment - Lead line
The lead line or hand lead is a simple navigational instrument used as a depth finder to measure the depth of water under the ship’s keel and to take samples of the sea bed. The long line may be marked at regular intervals with tags of different coloured and textured fabric, such as rope, leather and cloth. Each tag was a code to represent a certain depth. The leadsman’s eyes and hands could distinguish the depth easily as he drew in the lead line, day or night and in poor weather conditions. A standard set of codes for the tags was used so that the depth of the sea could be easily and quickly read. The measurement used was a Fathom, which equals 1.83 metres. The codes were: - 2 fathoms = 2 strips of leather 3 fathoms = 3 strips of leather 5 fathoms = white duck fabric 7 fathoms = red bunting fabric 10 fathoms = leather with a hole 13 fathoms = blue serge fabric 15 fathoms = white duck fabric 17 fathoms = red bunting 20 fathoms = 2 knots The lead weight could be between 7 -14 pounds (3.5 – 6.5kg) and the rope would be approximately 25 fathoms (45m). The hollowed-out end of the weight would hold a stick substance such as tallow or wax, which would pick up samples from the sea bed which would show whether the vessel was close to, or far away from, the shore. The leadsman would stand at the front of the vessel and cast the lead line into the sea. When it hit bottom he would note the tag marker nearest the surface of the water and call out his finding. Then he would haul it up again and examine the kind of matter that adhered to the end of the weight, whether it be sand, mud, gravel, or the colour of it. This information would be given to the ship’s helmsman or navigator and would help indicate the proximity to the land.This handheld lead is an example of early marine navigational equipment used by sailors to travel the seas to measure the depth of the water and sample the nature of the seabed. It helps to understand the history and progress made from the very basic to the sophisticated technology of today.Lead line, sounding line or depth finder. The long length of rope has a heavy lead weight attached to the end. Coloured fabric tags are tied onto the rope at regular intervals, representing different depths. The concave base of weight holds sticky substances such as tallow or beeswax, providing an adhesive surface to collect samples of sea bed like sand, shells or pebbles. flagstaff hill, warrnambool, shipwrecked coast, flagstaff hill maritime museum, maritime museum, shipwreck coast, flagstaff hill maritime village, lead line, depth finder, hand lead, sounding lin, leadsmane, navigation instrument, leadline, hand lead line