The Royal New Zealand Navy (RNZN; Māori: Te Taua Moana o Aotearoa, lit. 'the Sea War Party of New Zealand') is the maritime arm of the New Zealand Defence Force. The fleet currently consists of eight ships. The Navy had its origins in the Naval Defence Act 1913, and the subsequent acquisition 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 in December 1939, HMS Achilles fought alongside two other Royal Navy cruisers at the Battle of the River Plate against the German ship, Graf Spee.
The first recorded maritime combat activity in New Zealand occurred off the northern tip of the South Island in December 1642. Māori in war canoes attacked and killed four seamen from Abel Tasman's party, who were at the time in low boats between the main ships.
The New Zealand Navy did not exist as a separate military force until 1941. The association of the Royal Navy with New Zealand began with the arrival of James Cook in 1769, who completed two subsequent journeys to New Zealand in 1773 and 1777. Occasional visits by Royal Navy ships were made from the late 18th century. The Royal Navy played a part in the New Zealand Wars: for example, a gunboat shelled fortified Māori pā from the Waikato River in order to defeat the Māori King Movement.
World War I and the inter-war period
In 1909 the New Zealand government decided to fund the purchase of the battlecruiser HMS New Zealand for the Royal Navy, which saw action throughout World War I in Europe. The passing of the Naval Defence Act 1913 created the New Zealand Naval Forces, still a part of the Royal Navy. The first ship given by the British government for the New Zealand Naval Forces was the cruiser HMS Philomel, which escorted New Zealand land forces to occupy the German colony of Samoa in 1914. Philomel saw further action under the command of the Royal Navy in the Mediterranean, the Red Sea, and the Persian Gulf. By 1917 she was worn out and was sent back to New Zealand where she served as a depot ship in Wellington Harbour for minesweepers. In 1921 she was transferred to Auckland for use as a training ship.
The New Zealand Naval Forces passed to the control of Commander-in-Chief, China, after the Royal Navy forces in Australia came under Canberra's control in 1911. From 1921 to 1941 the force was known as the New Zealand Division of the Royal Navy. The cruiser Chatham along with the sloop Veronica arrived in 1920, Philomel was transferred to the Division in 1921, as was the sloop Torch, HMS Laburnum arrived in 1922 and then HMS Dunedin in 1924. HMS Diomede and the minesweeper HMNZS Wakakura arrived in 1926. Between World War I and World War II, the New Zealand Division operated a total of 14 ships, including the cruisers HMNZS Achilles (joined 31 March 1937) and HMNZS Leander, which replaced Diomede and Dunedin (replaced by Leander in 1937).
When Britain went to war against Germany in 1939, New Zealand officially declared war at the same time, backdated to 9.30 pm on 3 September local time. But the gathering in Parliament in Carl Berendsen's room (including Peter Fraser) could not follow Chamberlain's words because of static on the shortwave and waited until the Admiralty notified the fleet that war had broken out before Cabinet approved the declaration of war (the official telegram from Britain was delayed and arrived just before midnight).
HMS Achilles participated in the first major naval battle of World War II, the Battle of the River Plate off the River Plate estuary between Argentina and Uruguay, in December 1939. Achilles and two other cruisers, HMS Ajax and HMS Exeter, severely damaged the German pocket battleship Admiral Graf Spee. The German Captain Hans Langsdorff then scuttled Graf Spee rather than face the loss of many more German seamen's lives.
Achilles moved to the Pacific, and was working with the United States Navy (USN) when damaged by a Japanese bomb off New Georgia. Following repair, she served alongside the British Pacific Fleet until the war's end.
The New Zealand Division of the Royal Navy became the Royal New Zealand Navy (RNZN) on 1 October 1941, in recognition of the fact that the naval force was now largely self-sufficient and independent of the Royal Navy. The Prime Minister Peter Fraser reluctantly agreed, though saying "now was not the time to break away from the old country". Ships thereafter were prefixed HMNZS (His/Her Majesty's New Zealand Ship).
HMNZS Leander escorted the New Zealand Expeditionary Force to the Middle East in 1940 and was then deployed in the Mediterranean, the Red Sea, and the Indian Ocean. Leander was subjected to air and naval attack from Axis forces, conducted bombardments, and escorted convoys. In February 1941, Leander sank the Italian auxiliary cruiser Ramb I in the Indian Ocean. In 1943, after serving further time in the Mediterranean, Leander returned to the Pacific Ocean. She assisted in the destruction of the Japanese cruiser Jintsu and was seriously damaged by torpedoes during the Battle of Kolombangara. The extent of the damage to Leander saw her docked for repairs until the end of the war.
As the war progressed, the size of the RNZN greatly increased, and by the end of the war, there were over 60 ships in commission. These ships participated as part of the British and Commonwealth effort against the Axis in Europe, and against the Japanese in the Pacific. They also played an important role in the defence of New Zealand, from German raiders, especially when the threat of invasion from Japan appeared imminent in 1942. Many merchant ships were requisitioned and armed for help in defence. One of these was HMNZS Monowai, which saw action against the Japanese submarine I-20 off Fiji in 1942. In 1941–1942, it was decided in an agreement between the New Zealand and United States governments that the best role for the RNZN in the Pacific was as part of the United States Navy, so operational control of the RNZN was transferred to the South West Pacific Area command, and its ships joined United States 7th Fleet taskforces.
In 1943, the light cruiser HMS Gambia was transferred to the RNZN as HMNZS Gambia. In November 1944, the British Pacific Fleet, a joint British Commonwealth military formation, was formed, based in Sydney, Australia. Most RNZN ships, including Gambia and Achilles, were transferred to the BPF. They took part in the Battle of Okinawa and operations in the Sakishima Islands, near Japan. In August 1945, HMNZS Gambia was New Zealand's representative at the surrender of Japan.
During April 1947 a series of non-violent mutinies occurred amongst the sailors and non-commissioned officers of four RNZN ships and two shore bases. Overall, up to 20% of the sailors in the RNZN were involved in the mutinies. The resulting manpower shortage forced the RNZN to remove the light cruiser Black Prince, one of their most powerful warships, from service and set the navy's development and expansion back by a decade. Despite this impact, the size and scope of the events have been downplayed over time.
RNZN ships participated in the Korean War. On 29 June, just four days after 135,000 North Korean troops crossed the 38th parallel in Korea, the New Zealand government ordered two Loch-class frigates – Tutira and Pukaki to prepare to make for Korean waters, and for the whole of the war, at least two NZ vessels would be on station in the theatre.
On 3 July these two first ships left Devonport Naval Base, Auckland and joined other Commonwealth forces at Sasebo, Japan, on 2 August. These vessels served under the command of a British flag officer (seemingly Flag Officer Second in Command Far East Fleet) and formed part of the US Navy screening force during the Battle of Inchon, performing shore raids and inland bombardment. Further RNZN Loch-class frigates joined these later – Rotoiti, Hawea, Taupo and Kaniere, as well as a number of smaller craft. Only one RNZN sailor was killed during the conflict – during the Inchon bombardments.