Complete NTM 57/22

Latitude: 55º 57.735’N                                                         Longitude: 004º 48.887’W

WGS 84 Datum                                                                      WGS 84 Datum


Mariners are advised that ground investigation work (boreholes) at Gourock Ferry Terminal, Gourock Bay, Firth of Clyde is scheduled to recommence on or about 04 January 2023.

Weather permitting, the work is expected to be completed within 4 weeks and is being undertaken from vessel (jack-up barge) OCM80 pictured below. The vessel is not self-propelled and when required, will be manoeuvred under tow.

Communication will be maintained with CalMac Ferries and others as required via VHF radio 12 and 16 while works are ongoing. The barge is unmanned between periods of work.

All vessels navigating in the vicinity of Gourock Ferry Terminal, Gourock Bay, during this time are requested to maintain a lookout for the jack-up barge and pass at a safe distance and speed to minimise the effects of wash on the vessel.

Unless otherwise promulgated, information regarding the current status of NTMs can be found at where, if the NTM is still marked as ‘Active’ it is still in force.

Please contact the port on 01475 650 100 (Press Option 2) for an exact sitrep or further details can be obtained using the contact details below.


Issued on behalf of the Harbour Master

Caledonian Maritime Assets Limited


Categories: Notice to Mariners