WATCH: Jet skier warned off after close encounter with Portsmouth cross-Channel ferry

The Rampant at the ramparts of Portchester Castle in 1967. L to r: Peter Richardson (aka Ritchie Peters  they turned his name around) vocals, Ron Hughes guitar, Ken Hughes (his brother) drums, Don Golding bass, Mick Cooper Hammond organ.

NOSTALGIA: Still Rampant after all these years – the band that just keep giving...

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Video shows the moment a jet skier was warned off after steering close to a cross-Channel ferry in Portsmouth Harbour.

The footage posted to Twitter by Proud of Portsmouth @portsmouthproud shows a harbour patrol vessel approaching after the jet ski was ridden alongside the Brittany Ferries vessel Normandie.

A screenshot from the video

A screenshot from the video

The jet skier, who has a passenger on board, appears to be warned off by the crew of the patrol vessel.

No jet ski use is permitted within the harbour or within 0.5 of a nautical mile from shore outside the harbour without a licence from Queen's Harbour Master.