HMAS Lachlan (K364)

Laying the keel or laying down is the formal recognition of the start of a ship's construction. It is often marked with a ceremony attended by dignitaries from the shipbuilding company and the ultimate owners of the ship.

Sydney is the capital city of the state of New South Wales, and the most populous city in both Australia and Oceania. Located on Australia's east coast, the metropolis surrounds Sydney Harbour and extends about 70 km (43.5 mi) towards the Blue Mountains to the west, Hawkesbury to the north, the Royal National Park to the south and Macarthur to the south-west. Sydney is made up of 658 suburbs, spread across 33 local government areas. Residents of the city are known as "Sydneysiders". The 2021 census recorded the population of Greater Sydney as 5,231,150, meaning the city is home to approximately 66% of the state's population. Nicknames of the city include the 'Emerald City' and the 'Harbour City'.

James Henry Scullin was an Australian Labor Party politician and the ninth Prime Minister of Australia. Scullin led Labor to government at the 1929 Australian federal election. He was the first Catholic, as well as Irish-Australian, to serve as Prime Minister of Australia. The Wall Street Crash of 1929 transpired just two days after his swearing in, which would herald the beginning of the Great Depression in Australia. Scullin's administration would soon be overwhelmed by the economic crisis, with interpersonal and policy disagreements causing a three-way split of his party that would bring down the government in late 1931. Despite his chaotic term of office, Scullin remained a leading figure in the Labor movement throughout his lifetime, and was an éminence grise in various capacities for the party until his retirement in 1949.

The Lachlan River is an intermittent river that is part of the Murrumbidgee catchment within the Murray–Darling basin, located in the Southern Tablelands, Central West, and Riverina regions of New South Wales, Australia.

SS Yongala was a passenger and cargo ship that sank off Cape Bowling Green, Queensland, Australia on 23 March 1911. En route from Melbourne to Cairns she steamed into a cyclone and sank south of Townsville.

The Royal New Zealand Navy is the maritime arm of the New Zealand Defence Force. The fleet currently consists of nine ships. The Navy had its origins in the Naval Defence Act 1913, and the subsequent purchase of the cruiser HMS Philomel, which by 1921 had been moored in Auckland as a training ship. A slow buildup occurred during the Interwar period, and then perhaps the infant Navy's finest hour occurred soon after the beginning of World War II when HMS Achilles fought alongside two other Royal Navy cruisers at the Battle of the River Plate in December 1939.

A survey vessel is any type of ship or boat that is used for underwater surveys, usually to collect data for mapping or planning underwater construction or mineral extraction. It is a type of research vessel, and may be designed for the purpose, modified for the purpose or temporarily put into the service as a vessel of opportunity, and may be crewed, remotely operated, or autonomous. The size and equipment vary to suit the task and availability.

The South Island, also officially named Te Waipounamu, is the larger of the two major islands of New Zealand in surface area, the other being the smaller but more populous North Island. It is bordered to the north by Cook Strait, to the west by the Tasman Sea, and to the south and east by the Pacific Ocean. The South Island covers 150,437 square kilometres (58,084 sq mi), making it the world's 12th-largest island. At low altitude, it has an oceanic climate.

Wellington Harbour is a large natural harbour on the southern tip of New Zealand's North Island. New Zealand's capital city, Wellington, is located on parts of its western and southern sides. Lower Hutt is located on parts of its northern and eastern sides.

The Royal Navy (RN) is the United Kingdom's naval warfare force. Although warships were used by English and Scottish kings from the early medieval period, the first major maritime engagements were fought in the Hundred Years' War against France. The modern Royal Navy traces its origins to the early 16th century; the oldest of the UK's armed services, it is consequently known as the Senior Service.

Napier is a city on the eastern coast of the North Island of New Zealand and the seat of the Hawke's Bay region. It is a beachside city with a seaport, known for its sunny climate, esplanade lined with Norfolk Pines and extensive Art Deco architecture. Napier is sometimes referred to as the "Nice of the Pacific".