On This Day - 25 July
- A new form of signalling called semaphore was introduced into the RN.
The system was devised by the Reverend Lord George Murray.
- The Australian Government authorised the building of two light cruisers for the Australian Navy. The cruisers were named HMAS SYDNEY and HMAS MELBOURNE.
- Transfer of the RAN Bridging Train for service with the Army on Gallipoli was approved by the Admiralty.
The train handled the building of jetties and berthing facilities, and the unloading of stores and ammunition. It's arrival at Gallipoli freed large numbers of soldiers for combat duties.
- The patrol vessel HMAS GANNET, was commissioned. GANNET, (as PENGUIN), was an examination vessel in WWI, and was requisitioned for the RAN in June 1918.
- HMAS SYDNEY, (cruiser), was painted in camouflage colours at Alexandria. The effectiveness of camouflage on ships at sea was the subject of controversy throughout the war.
- HMAS WAGGA, (minesweeper), was launched at Mort's Dock, Sydney.
HMAS VIGILANT, (auxiliary patrol vessel), commanded by SBLT H. A. Bennett, RANR, sailed from Darwin on her first voyage to occupied Timor, with supplies for the Australian commando force, (Sparrow Force). The former customs launch made three passages to Timor.
- HMA Ships GAWLER, IPSWICH, LISMORE, and MARYBOROUGH, were on anti submarine patrol off Syracuse, Sicily, when the Luftwaffe attacked the city, shipping in the harbour, and the anti-submarine patrol. IPSWICH was nearly hit three times, and her guns crew succeeded in shooting down a Junkers JU 88 bomber. MARYBOROUGH was also near-missed by several bombs, and her Commanding Officer later reported that the only damage done was to his underpants!
- The USS SAWFISH, (submarine), sank the Japanese submarine I-29. I-29 was the last survivor of the submarine force which launched the midget submarine attack on shipping in Sydney Harbour.
- HMAS HOBART, (guided missile destroyer), was Naval Gunfire Ship for operations by the US II Corps in Vietnam.
'On This Day' is based on the book "Navy Day by Day: Historic Naval Events in Australia and Abroad" written by the late Lew Lind. More information.