Sextant used by Bill Virtue, an apprentice on the Adelaide Steamship Co. ship 'Manoora' in 1957Label on the book indicates that the sextant was examined by the National Physical Museum Kew observatory, Richmond Surrey England in 1901Sextant in timber box made around 1901 in the UK.Examined by National Physical Museum Kew Observatory Richmond Surrey Eng 1901sextant, navigation, 'manoora', adelaide steamship co, bill virtue

Ruler recovered from the SS Time during salvage processA small navigational ruler marked for lengths and anglesMarkings showing length and angles in inches. Made in England. ruler, navigational instruments, ss time

An inclinometer measures the angle of inclination of a vessel or aircraft to the horizontalTimber and brass inclinometer from the M.V. Australian Explorer. Triangular timber shape with curved base. Brass measuring plate with measurements from 0-40 degrees on each side. Brass pointer indicates angle of inclination of vessel. 'EIWA' label on front. '87-156' inscribed in pen on back and underside. navigational instruments, australian explorer

Unknown history but potentially off wrecked yachtPortable compass in metal case with glass front and spirit light compartment on left sidecompass, navigation

Roller bearing parallel ruler in timber case.navigation, drafting, instrument

William Thomson described a new "Marine Azimuth Mirror" at the 1877 meeting of the British Association for the Advancement of Science, and patented the design in Britain and the U.S. This instrument is an example of the improved design, with a reflecting prism in place of the original mirror. Thomson introduced this form in the early 1880s. The signature indicates that it was made during the period 1900-1913. A child prodigy, William Thomson went to university at the age of eleven. At twenty-two he was appointed Professor of Natural Philosophy in Glasgow where he set up the first physics laboratory in Great Britain and proved an inspiring teacher. He primarily researched thermodynamics and electricity. On the practical side he was involved in the laying of the Atlantic telegraph cable. He was also the partner of a Glasgow firm that made measuring instruments from his own patents.An instrument of significant importance which made marine navigation easier and more accurate in the early twentieth century.An Azimuth mirror with wooden box.Kelvin & Hughs Ltd Serial No - illegible Made in Great Britainazimuth mirror, william thompson, lord kelvin, naviagtion, marine instruments

A telescope in its own timber box.Turn this to change powertelescope, navigation

Bass Strait passenger ship Nairana. Built for Bass Strait ferry operator Huddart Parker & Co. Ltd. of Melbourne during World War One, the Nairana was requisitioned by the Royal Navy and completed as a seaplane carrier, HMS Nairana. Serving from 1917 to 1920 participating in the capture of Archangel during the Bolshevik Revolution. After 1920 she was decommissioned as a seaplane carrier and returned to her Australian owners crossing Bass Strait until she was laid up in 1948. Just off Port Phillip Heads on April 12 1936, a strong wave struck the Nairana, tipping her over for two minutes before she righted herself again. During the horrifying two minutes, four people were drowned, and eight people were injured. The ship was reportedly carrying roughly one tonne of concrete in the hull when she tipped. Reports from the local papers said that it was a tidal wave meanwhile others were saying it was either an earthquake or a total lie. A later paper said that the ship had been caught in a rip at the mouth of the bay, causing the tragedy. The S.S Nairana, was sold for £4,000 (over $170,200 in today’s money!) in 1951 after two years of being stranded on the beach at Port Melbourne, when the moorings broke one night during a storm and drifted ashore, causing her to wreck.Items associated with the TSS/HMS Nairana in its military and civilian roles and items relating to Capt. JF Spence, navigation Officer and possibly later the captain who sailed with the Nairana out of Plymouth after WWI. .01 Barometer and Clock from Dining Saloon .02 Commemorative plaque describing the HMS Nairana's WWI service with timber mount for plaque with information sheet attached. .03 Clock Key .04 Two 2 Log books owned by Capt. Spence containing the navigation calculations for the journey from Plymouth to Melbourne. .05 Huddart Parker hat badge [Capt. JF Spence].Barometer and Clock from dining saloon, TSS Nairana 1917 - 1951 Clock Key - 4 50-No9 Hat badge - HPtss nairana, wwi, bass strait, huddart parker, capt. spence

Formerly of Station Works, Wakering Road, Barking, Essex, Henry Browne & Son were important British compass makers. The company was founded in the nineteenth century in Barking and London. They were respected English instrument makers who made fine quality compasses, ships clocks, inclinometers, sextants and chandlery items for over 140 years. Their "Dead Beat" compass, which was well dampened to reduce oscillation, was fitted to many Allied ships during the Second World War. Sestrel was their famous Trade Mark brand. The company was sold to John Lilley & Gillie Ltd and SIRS Navigation, both UK companies, in 1993. Example of a hand held compass used in WWIIA Sestrel hand held bearing compass with wooden handle in own glass fronted, wooden container.Sestrel Henry Browne & Son Ltd Barking Londoncompass, navigation

8 cm compass Pattern 9628 in wooden boxCompass Patt 9628S Delicate instrument handle with care 287A/62compass, navigation

A round hand held navigational engineer compassEngineer Compassnavigation, compass

Various artifacts from the steamship 'Wattle'. The Steam Tug Wattle, a steel ship, was built as a harbor tug in 1933. Steam is supplied from a two-furnace Scotch Marine wet-back boiler which was originally fired with dewatered and filtered waste oil but has recently been converted to burn distillate for environmental and maintenance reasons. It was launched at Cockatoo Island on 27 June 1933 by Cockatoo Docks & Engineering Co. Ltd. (CODECO) on order from the Commonwealth Shipping Board. Now fully restored it operates excursions in Port Phillip and the Yarra.Solar Reflector with spirit level in wooden boxst wattle, navigational intruments

Although the provenance cannot be confirmed it is believed that this lead possibly originated from the SS Time.Since at least the sixth century B.C. the sounding lead or sounding weight was in use in the Mediterranean area for maritime navigation. It is the oldest known marine navigational instrument and it remained a primary navigational aid in coastal waters and rivers well into the twentieth century.A sounding lead with rope line attached. One surviving leather fathom depth marker is spliced into the rope.sound lead, navigation

Representative of a piece of military equipment used in both world wars.Military type prismatic compass with hinged lid and rotating glass face with luminus markings allowing the instrument to be used for night navigation. Black metal construction.compass, military

An hourglass or sandglass is an instrument for measuring a defined time and can be used perpetually by simply turning it over immediately the top bulb empties. The clear blown glass is shaped into two equal sized bulbs with a narrow passage in the centre and contains uniform sized sand or glass particles in the lower bulb. The width of the neck regulates the constant flow of the particles. The glass is held in a stand with top and bottom of equal shape and size. Hourglasses can measure an infinite variety of time by gauging the size of the particles, the shape and size of the bulbs and the size of the passage between the bulbs, thus measuring hours or minutes or even seconds. Generally an hourglass sits between discs of wood at the ends, which are joined by long wooden spindles between the ends and tightened by screw caps. The length of time can be adjusted by adding or removing sand particles. The use of the marine sandglass (or hourglass) has been recorded in the 14th century in European shipping. A one minute sandglass was used in conjunction with the ship’s log for ‘dead reckoning’, (see below) that is, for measuring the ship’s speed through the water. They were also used to regulate ringing the ship’s timetable; for example a 4 hour sandglass was used for the length of the sailors’ watch, and a half hour timer for taking of readings for the ship’s log; the ship’s bell would be rung every half hour. It was usually the role of the cabin boy to watch and turn the sandglasses over at the exact time of them emptying their upper chambers and to ring the ship’s bell. Hourglasses have been used historically for many hundreds of years. Some have been used for timing church sermons, in cooking, in industry and at sea. Even today they are used for measuring the cooking time of eggs and timing a player’s turn in games such as Boggle and Pictionary. The sandglasses at sea were gradually replaced in the late 1700’s to early 1800’s by the more accurate chronometers (marine clocks) when they became reliable instruments. DEAD RECKONING (or Deduced Reckoning) Dead reckoning is the term used to describe the method of calculating the ship’s position from its speed and direction, used in early maritime travel, mostly in European waters. Both the (1) speed and the (2) direction of travel were recorded on a Traverse Board at half-hourly intervals during a helmsman’s watch of 4 hours. The navigator would record the readings in his ship’s log, plot them on his navigational chart and give his updated course directions to the next helmsman on watch, along with the cleared Traverse Board. This was a very approximate, but none-the-less helpful, method of navigation. The wooden Traverse Board was a simple pegboard with a diagram of a compass with eight peg holes along the radius to each of the compass points, plus a grid with ascending half hours in the left column and increasing ship’s speed in knots in a row across the column headings, with a peg hole in each of the intersecting cells. A number of wooden pegs were attached to strings on the board. By placing one peg consecutively in the direction’s radius hole, starting from the centre, and the speed holes when the half hourly reading was taken, a picture of speed and direction for the whole 4 hour watch was created. (1) To measure the ship’s speed a one minute hourglass timer was usually used to measure the ship’s speed through the water and help to calculate its longitude. A rope, with knots at regular standard intervals and a weight such as a log at the end, would be thrown overboard at the stern of the ship. At the same time the hourglass would be turned over and a seaman would start counting the number of knots on the rope that passed freely through his hands as the ship travelled. When the timer ran out the counting would be stopped. A timer of one minute (one-sixtieth of an hour), knots spaced one-sixtieth of a nautical mile apart, and simple arithmetic easily gave the speed of the ship in nautical miles per hour ("knots"). This would be recorded every half hour. The speed could however be inaccurate to the travel being affected by ocean currents and wind. (2) To calculate the ship’s direction a compass sighting would be recorded each half hour.Marine hourglasses or sandglasses were used from around the 14th to 19th century during the time of sailing ships. This hourglass is representative of that era, which is during the time of the colonisation of Australia. Hourglass or sandglass; an instrument used to measure time. Two equal sized clear glass bulbs joined with a narrow passage between them, containing equal sized particles of sand grains in lower bulb. Glass sits in a brass collar at each end, in a frame comprising 3 decorative brass columns or posts, each attached top and bottom, using round screw-on feet, to round brass discs. Disc have Roman numerals for the numbers 1 - 12 pressed into their inner surfaces and hieroglyphics on the outer surfaces. Roman numerals on inner surface of discs " I II III IV V VI VII VIII IX X XI XII " Hieroglyphics impressed on outer surface of discsflagstaff hill, warrnambool, shipwrecked coast, flagstaff hill maritime museum, maritime museum, shipwreck coast, flagstaff hill maritime village, great ocean road, horology, hourglass, hour glass, sandglass, sand glass, timing instrument, dead reckoning, deduced reckoning, finding latitude at sea, sandglass with hieroglyphics and roman numerals, hourglass with hieroglyphics and roman numerals, brass hourglass

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