Bird class minesweeper
Encyclopedia
The Bird class minesweeper was a naval trawler
Naval trawler
A naval trawler is a vessel built along the lines of a fishing trawler but fitted out for naval purposes. Naval trawlers were widely used during the First and Second world wars. Fishing trawlers were particularly suited for many naval requirements because they were robust boats designed to work...

 built to Admiralty
Admiralty
The Admiralty was formerly the authority in the Kingdom of England, and later in the United Kingdom, responsible for the command of the Royal Navy...

 specifications so it could function as a minesweeper
Minesweeper (ship)
A minesweeper is a small naval warship designed to counter the threat posed by naval mines. Minesweepers generally detect then neutralize mines in advance of other naval operations.-History:...

. Forty-five were built. The RNZN ships were also referred to as
corvette
Corvette
A corvette is a small, maneuverable, lightly armed warship, originally smaller than a frigate and larger than a coastal patrol craft or fast attack craft , although many recent designs resemble frigates in size and role...

s.

The
Bird class evolved from the experimental MS trawler HMS Basset, 1935, followed by HMS Mastiff, 1938, both built by Henry Robb Ltd. They were slightly larger and more powerful than these prototypes of what ultimately became the Isles'
Isles class trawler
The Isles class trawlers were a class of naval trawler used by the Royal Navy, Royal Canadian Navy and Royal New Zealand Navy during World War II....

 class.

Second World War

On 29 January 1943, in a classic duel, Kiwi
HMNZS Kiwi (T102)
HMNZS Kiwi was a Bird class minesweeper of the Royal New Zealand Navy.She was commissioned in 1941 for minesweeping and anti-submarine roles. From 1948 to 1956 she functioned as a training ship....

 and Moa
HMNZS Moa (T233)
HMNZS Moa was a Bird class minesweeper of the Royal New Zealand Navy.On 29 January 1943, with her sister ship Kiwi, Moa helped ram and wreck the Japanese submarine I-1...

 rammed and wrecked the Japanese submarine I-1
Japanese submarine I-1
The Japanese submarine I-1 was a J1 type submarine built by Kawasaki, Kobe, for the Imperial Japanese Navy. She was a large cruiser submarine displacing 2,135 tons and was the lead of four boats built in the class....

.
On 19 August 1943 Tui
HMNZS Tui (T234)
HMNZS Tui was a Bird class minesweeper of the Royal New Zealand Navy. She was commissioned in 1941 for minesweeping and anti-submarine roles....

 and some US Kingfisher
OS2U Kingfisher
The Vought OS2U Kingfisher was an American catapult-launched observation floatplane. It was a compact mid-wing monoplane, with a large central float and small stabilizing floats. Performance was modest, because of its light engine...

 float-planes jointly sank the Japanese submarine I-17
Japanese submarine I-17
I-17 was a Japanese B1 type submarine of the Imperial Japanese Navy which saw service during World War II. She was the first Axis ship to shell the United States mainland.-Pearl Harbor:...

.
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