In the UK, the Maritime and Coastguard Agency (MCA) is responsible for the provision of Maritime Safety Information (MSI) to ships at sea, which includes both weather information and navigational warnings.
A full Maritime Safety Information service is available on NAVTEX (518 and 490 kHz).
Solent & Portland Maritime Rescue Coordination Centre (MRCC) broadcasts on: Channels VHF 23, VHF 84, and VHF 86.
MSI is broadcast in local time such that the `clock time' that the broadcasts will be received at will remain the same throughout the year:
0130 - B 0430 - C 0730 - A 1030 - C
1330 - B 1630 - C 1930 - A 2230 - C
Routine A - Full Maritime Safety Information broadcast, including new inshore forecast and outlook, gale warnings, shipping forecast, navigation warnings (WZ), SUBFACTS and GUNFACTS where appropriate, three day fisherman's forecast when and where appropriate.
Routine B - New inshore forecast plus previous outlook, gale warnings.
Routine C - Repetition of inshore forecast and gale warnings as per previous Routine A or B broadcast plus new strong wind warning (SWW).
BBC Shipping Forecast
Weather bulletins for shipping are broadcast daily on BBC Radio 4 at the following times: 0048, 0520, 1201 and 1754 (local time).
All broadcasts are on long wave (LW) 1515m (198 kHz) and some transmissions are on VHF. It gives a summary of gale warnings, a general synopsis and forecasts for specified areas around the UK. The radio bulletin also includes the coastal weather reports (0048 and 0536 only).
Weather information is also available from marinas, harbour offices, Radio Solent, Isle of Wight Radio and the Bramblemet weather station.
DAB radio, FM 96.1 and FM 103.8
Isle of Wight Radio
FM 107 & FM 102
Weather reports from Bramble Bank in the centre of the Solent.
Cowes tide tables are available to view here.