A framed map depicting trench lines and the battlefields of the Gallipoli Campaign, 1915, made by the Survey Department Egypt. Depth soundings of landing areas off Anzac Cove.Gallipoli - Anzac Cove World War One Map - 1915world war one, anzac, gallipoli, 1915, anzac cove, map, dardenelles, trench lines, depth soundings, landing areas

Accurate charts were imperative for sea farers to sail their vessels safely from one side of the world to another. The British Admiralty published many charts and updated them frequently. Specialists were employed to gather information such as depth soundings to give the navigator as many helps as possible. At regular intervals the charts had to be updated with the amount of adjustment needed to a compass to allow for magnetic variation.This chart is significant for its association with incoming and outgoin ships for trade and passengers in the late 19th century.Admiralty Chart of Port Phillip, Victoria, South Coast of Australia. It shows navigation buoys, lighthouses, tides and money other details. It was surveyed by Commander Henry L. Cox R.N. in 1864. Published by Admiralty August 19th 1865. Corrections were made by Staff Commander E.J. Stanley R.N. in 1874. The West Channel was surveyed b J.B. Mason , Engineer, in 1899. Published and cartographed in Admiralty, London, England in 1897, supervised by Capt G H Richards R N Hydrographer. Chart was updated in 1899. Sold by W D Potter Agent for Admiralty Charts 145 minorities.Printed: "Port Phillip" "Australia - South Coast, Victoria"flagstaff hill, warrnambool, maritime-museum, flagstaff hill maritime museum & village, shipwreck coast, chart, australia, south coast, port phillip, admiralty, 1899, navigation, cartography, cartographer

This report lists the depths of water and the consistency of the seabed surrounding the Warrnambool Harbour in October 1929, The information, often referred to as 'soundings', was obtained by Jet Probing,. In earlier days a lead line was used to perform a similar task. The author of the document is unknown. Jet Probing is a method used for underwater archaeology, cable installation and coastal engineering. A jet probe is a machine that produces a strong jet of water that penetrates the layers of sediment on the seabed, determining their depth, thickness and consistency. It provides a survey of the seabed and can be used as an aid to engineering design and construction. The report mentions lining up with the wooden jetty, the end of the breakwater and the leading lights. It mentions sand, loose rock and rock. It tells of stopping work due to the water being too rough, the pipe choking, difficulty in connecting pipes, and pipe joint breaking as it tried to get through the sand, The report in the document is significant for its connection with the Warrnambool Harbour, Warrnambool Breakwater, Warrnambool Jetty and Lady Bay. The report gives figures for the depth and consistency of the water and seabed at a particular point in time and can be used to compart with similar figures taken at different times. The results could determine plans for future engineering works.Report, titled 'Jet Probings, Warrnambool Harbour'. Two pages of cream coloured paper with hand written notes in pen and ink. Report covers three days of Jet Probings, with resulting figures and comments, for the depths of the surroundings of the Warrnambool Harbour. The report is in point form, with some underlining. Dates of recordings are 14-10-29, 15-10-29 and 16-10-29. (1929) The situation of the harbour had become a real problem by 1910 and required continuous dredging. In 1914 the Breakwater was extended but proved to be a failure because the work began to subside and by 1920 about two thirds of the harbour was silted up. Alterations made in the 1920's increased the silting problem. The soundings and Jet Probings were done after the Royal Commission of 1923, when the damaged stonework on the seaward side of the Warrnambool Breakwater, caused by the action of the sea, was the subject of enquiry. A conference between the Public Works, Water Commission and the Harbour Trust concluded that it would less costly to make repairs to prevent further damage rather than replaced the damage portion of the wall. A contract was raised in late 1924 to deposit rubble on the damaged side of the breakwater to minimise the Southern Ocean’s destructive action and work had started by August 1925. By the 1940's the harbour was no longer used. More alterations were made in the 1950's and 1960's. document, depth, warrnambool harbour, 1929, soundings, jet probe, jet probing, seabed, map of seabed, underwater engineering, warrnambool jetty, warrnambool breakwater, breakwater upgrade, leading lights, chart the harbour, flagstaff hill, warrnambool, flagstaff hill maritime museum & village, maritime museum, maritime village, shipwreck coast, lady bay, port of warrnambool, breakwater, jetty, pier, vhr h2024, royal commission, 1923, public works, water commission, harbour trust, victorian harbours

These charts show changes to the depth levels surrounding Queenscliff. Earlier chart does not show the cut which can be seen in the later chart. The creation of the cut and subsequebt dredging of it has changed the shoreline due to shifting sand.Two charts of the Port Phillip West Channel, reference number 309. One was engraved in 1903, the other a new 1935 edition last revised in 1961.Port Phillip West Channelport phillip, queencliff channel, charts, soundings