A diving bell dropped 90 metres after an anchor chain cut its lift wire
カートのアイテムが多すぎます
ご購入は五十タイトルがカートに入っている場合のみです。
カートに追加できませんでした。
しばらく経ってから再度お試しください。
ウィッシュリストに追加できませんでした。
しばらく経ってから再度お試しください。
ほしい物リストの削除に失敗しました。
しばらく経ってから再度お試しください。
ポッドキャストのフォローに失敗しました
ポッドキャストのフォロー解除に失敗しました
A diving bell dropped 90 metres after an anchor chain cut its lift wire
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A diving bell dropped 90 metres after an anchor chain cut its lift wire
In this episode, we follow the documented sequence of a night dive off the Beryl Alpha platform in 1978 and the decisions, equipment and conditions that set the scene. What choices and failures left two men on the seabed with rescue teams searching through a storm?
Person: Michael Ward
Person: Gerard Anthony Prangley
Date: 27 November 1978
Location: Near the Beryl Alpha oil platform, North Sea
Vessel: MS Star Canopus
- The MS Star Canopus used dynamic positioning and had a documented beam-wind limit of 18-20 knots.
- At 05:45 a north wind sustained at 40 knots pushed the vessel beyond its DP capability and the captain began turning the bow into the wind.
- The diving bell was descended to 102 metres carrying Ward outside on an umbilical and Prangley as bellman inside managing the lifeline.
- Anchor chains from the nearby Haakon Magnus semi-submersible lay in the water within the operational zone beneath the surface.
- When the lift wire contacted an anchor chain it simultaneously severed the main lift wire, the life-support umbilical, and the guide wires, and the bell fell ninety metres.
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