Tides &
Arrivals &

Local Notices to Mariners & Navigation Warnings

Coastguard & Navigation

Guernsey Coastguard Maritime Safety Information



pdf icon GCG NAVWARN 054-21 Alderney Breakwater Light Inoperative [150kb]

Maritime Safety Information (MSI) radio broadcasts

MSI broadcasts are announced by Guernsey Coastguard to alert mariners of the latest wind, sea conditions, and navigational warnings in their respective sea areas. All Navigation Warnings and Safety Broadcasts could include, live firing warnings at Fort Le Marchant, information on maritime events (such as sailing regattas, swimming events) and wind warnings issued by Jersey Met. MSI Broadcasts will be announced by Guernsey Coastguard on VHF Channel 16 before being broadcast in full on VHF Channel 20.

The full Channel Islands Shipping Forecast will not be included as part of the MSI broadcast for the Bailiwick as this is undertaken by Jersey Coastguard for the whole Channel Islands sea area. The Channel Islands' Shipping Forecast will be available on request to mariners by contacting Guernsey Coastguard. Alternatively, the shipping forecast is available on Jersey Met's website or broadcast on BBC Guernsey's AM FM DAB and online services at certain points in the day. 

The MSI will generally be broadcast at the following times (All times in UTC/GMT) 01:33, 05:33, 09:33, 13:33, 17:33, 21:33.

Live Round Firing

Mariners must keep clear of the seas near the Fort Le Marchant firing range when red flags are flying in the Northern part of Guernsey between the Grande Hougue and Le Plomb, at Le Fontenelle. On the days of firing, the MSI broadcast will contain navigational warnings announced by Guernsey Coastguard on VHF Channel 20.

pdf icon Rifle Range Calendar 2021 [230kb]

Local Notices to Mariners (LNTMs)



pdf icon 017/2016 - Platte Fougere Lighthouse - Fog Signal [180kb]


pdf icon 007/2018 Cambridge Berth - Restricted Access [182kb]


pdf icon 005/2019 Havelet Slipway Closed [303kb]

pdf icon 010/2019 St Peter Port. RoRo. Berths. Depths. [561kb]

pdf icon 012/2019 Cruise Ship Safety Zone [241kb]

pdf icon 014/2019 Guernsey VTS [569kb]

pdf icon 020/2019 St Sampson - PWC [191kb]


pdf icon 003/2020 Berth 7. Lower Landing Berthing Restriction [182kb]

pdf icon 026/2020 Little Russel - Marine Mammal Monitoring Buoys [189kb]

pdf icon 027/2020 Guernsey Electricity - Subsea Power Cables [736kb]

pdf icon 028/2020 Navigation Lights [198kb]


pdf icon 019/2021 - Safe Speed - Speed Limit in Coastal Restricted Zones [179kb]

pdf icon 021.2021 COVID 19 - St Peter Port - Swan Pontoons - Visiting Vessels [110kb]

pdf icon 025/2021 QE2 Marina Gates - Survey [110kb]

pdf icon 026/2021 Braye Harbour - Unmarked Reef [120kb]

pdf icon 027/2021 St Peter Port - Unloading of Fishing Vessels on RoRo Ramp 1 [114kb]

pdf icon 033/2021 St Peter Port - Inter-Island Quay - Versadock [267kb]

pdf icon 044/2021 COVID 19 - 22 October - Visiting Leisure Vessels [263kb]

pdf icon 045/2021 AMEND - COVID 19 - Locally Registered Leisure Vessels from Outside of the Bailiwick [256kb]