And commercial ships have also been advised to use the shipping channel that is furthest away from the wreck.
Jersey Coastguard says it has evidence that divers have visited the site of the sunken motorboat, which went down earlier this month after hitting a buoy just hours after the RNLI removed the George Sullivan lifeboat from the Island.
The latest survey of the site has found that the 45-tonne vessel is moving around a lot and at times is standing ‘bow upright’, which it is thought is be due to an air pocket.
As a result Economic Development Minister Lyndon Farnham has now signed a ministerial decision authorising that an exclusion zone be put in place at the instruction of the Harbourmaster.
The Harbourmaster had previously said that the yacht could be left on the seabed and not recovered, with investigations continuing.
A report accompanying the ministerial decision says that a survey conducted on Tuesday found that the wrecked motorboat was moving ‘dynamically with the tide’.
It adds: ‘It is suspected that an air pocket in the bow means that during slack water the vessel is almost perpendicular to the seabed, sitting on its stern.’
The exclusion around the area of the wreck, which is located about half a nautical mile south of La Moye Point between the two main commercial shipping channels, is in place until further notice.
