The Dutch Walrus-class submarine HNLMS Dolfijn spent 24 hours in Plymouth on a scheduled port visit to Devonport.
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Westward Shipping News captured the submarine yesterday evening on our 24 live webcam.
The submarine plays a vital role in performing intelligence operations, and can reach a top speed of 13 knots when surfaced, and 20 knots when submerged.
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Naval experts say the Walrus-class submarine boasts a twin-hull configuration in a teardrop shape that was visible in pictures of the sub leaving the Sound today.
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HNLMS Dolfijn is powered by diesel-electric propulsion systems.
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