Since 28 July, thieves have helped themselves to a lap-top computer, four global-positioning systems (GPS), binoculars, power tools and £500 in cash.
Police are now advising boat owners to security-mark their property, particularly their high-cost essential travel equipment such as GPS systems, and where possible not to leave valuable property on board.
Detective constable Bruce Liron of the crime reduction unit said: ‘Generally marinas are low-crime areas, with boat owners keeping an eye on each other’s boats.
We would urge all boat owners to be vigilant at this time.
Any suspicious activity at the marina should be reported to us or to Jersey Harbours.
‘Boat-marking security kits can be used to mark everything on a boat, such as engines and navigational aids,’ added Harbourmaster Howard Le Cornu.
