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This Little Ship - HMS PLYM - Operation Hurricane 1/2
HMS Plym (K271) was a River class frigate that served in the Royal Navy from 1943-1952.
Plym was built to the RN's specifications as a Group II River class frigate. She was laid down at Smiths Dock Co., South Bank-on-Tees on 1 August 1942 and launched on 4 February 1943.
She was commissioned into the RN on 16 May 1943 as HMS Plym (K271) and was named after the River Plym in Devon, England which flows into the English Channel at Plymouth.
Plym saw extensive service on Atlantic convoy escort missions.
Plym, along with HMS Bann (K256), HMS Teviot (K222) and HMS Trent (K243), provided anti-submarine escort to the convoy WS-33 which arrived in South Africa from the United Kingdom on 9 October 1943 with critical reinforcements for service in Burma.
Plym was used as the detonation platform for the UK's first nuclear weapon in Operation Hurricane. A 25 kiloton bomb was detonated a few seconds before 09:30 local time on 3 October 1952 approximately 400 metres from the island of Trimouille in the Monte Bello Islands, Western Australia.
Operation Hurricane was the test of the first British atomic bomb on 3 October 1952. A plutonium implosion bomb was detonated off the Montebello Islands, Western Australia
The weapon was a close copy of the Fat Man (Nagasaki) weapon, although it was set up prior to the detonation in a levitated pit. Although increasing the power of the bomb, this was actually done as a safety measure. There were concerns that without the gap between the tamper and the pit, a criticality accident could occur. The bomb used plutonium produced mainly at Windscale (now Sellafield) in Cumbria with a low Pu-240 content since hurried production led to short irradiation times. However, Windscale could not quite meet the 1 August 1952 deadline for manufacturing the inner core and the device also used some Canadian-supplied plutonium.
To test the effects of a ship-smuggled bomb (a threat of great concern to the British at the time), Hurricane was exploded inside the hull of HMS Plym (a 1,370-ton River class frigate) which was anchored in 12 m of water 350 m offshore. The explosion occurred 2.7 m below the water line, and left a saucer-shaped crater on the seabed 6 m deep and 300 m across.
Length: 218
Rating: 4.50 (2 ratings)
Tags: COLD WAR NUKES NUCLEAR WEAPONS ATOMIC BOMB TESTING SOVIET Missle history physical science social political
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This Little Ship - HMS PLYM - Operation Hurricane 2/2
HMS Plym (K271) was a River class frigate that served in the Royal Navy from 1943-1952.
Plym was built to the RN's specifications as a Group II River class frigate. She was laid down at Smiths Dock Co., South Bank-on-Tees on 1 August 1942 and launched on 4 February 1943.
She was commissioned into the RN on 16 May 1943 as HMS Plym (K271) and was named after the River Plym in Devon, England which flows into the English Channel at Plymouth.
Plym saw extensive service on Atlantic convoy escort missions.
Plym, along with HMS Bann (K256), HMS Teviot (K222) and HMS Trent (K243), provided anti-submarine escort to the convoy WS-33 which arrived in South Africa from the United Kingdom on 9 October 1943 with critical reinforcements for service in Burma.
Plym was used as the detonation platform for the UK's first nuclear weapon in Operation Hurricane. A 25 kiloton bomb was detonated a few seconds before 09:30 local time on 3 October 1952 approximately 400 metres from the island of Trimouille in the Monte Bello Islands, Western Australia.
Operation Hurricane was the test of the first British atomic bomb on 3 October 1952. A plutonium implosion bomb was detonated off the Montebello Islands, Western Australia
The weapon was a close copy of the Fat Man (Nagasaki) weapon, although it was set up prior to the detonation in a levitated pit. Although increasing the power of the bomb, this was actually done as a safety measure. There were concerns that without the gap between the tamper and the pit, a criticality accident could occur. The bomb used plutonium produced mainly at Windscale (now Sellafield) in Cumbria with a low Pu-240 content since hurried production led to short irradiation times. However, Windscale could not quite meet the 1 August 1952 deadline for manufacturing the inner core and the device also used some Canadian-supplied plutonium.
To test the effects of a ship-smuggled bomb (a threat of great concern to the British at the time), Hurricane was exploded inside the hull of HMS Plym (a 1,370-ton River class frigate) which was anchored in 12 m of water 350 m offshore. The explosion occurred 2.7 m below the water line, and left a saucer-shaped crater on the seabed 6 m deep and 300 m across.
Length: 461
Rating: 4.20 (4 ratings)
Tags: COLD WAR NUKES NUCLEAR WEAPONS ATOMIC BOMB TESTING SOVIET Missle history physical science social political
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Upper Plym in low water (its gnarltastic)
Me ,Sherman Wright and Dave Balding run a rocky river. Nov 2008
Length: 538
Rating: 0.00 (0 ratings)
Tags: Kayaking canoeing whitewater creeking
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The High Upper Plym, 2 Hour Walk In.
2 Paddlers, 2 hour walk and a great paddle. River high but dropping fast.
Length: 495
Rating: 0.00 (0 ratings)
Tags: Kayak Plym River Dartmoor
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...plym-bridge...
plym-bridge baby
Length: 163
Rating: 0.00 (0 ratings)
Tags: plym bridge
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