The times and frequency of VHF broadcasts made by the Maritime Rescue Co-ordination Centres (MRCCs) changed from the 1st February 2007.

Changes were made to the content of the broadcasts, the transmission procedures, and to the announcements made on VHF Channel 16 prior to the start of the MSI broadcast, which became standardised, shorter and more focused.There are 2 full MSI broadcasts a day.  Three hours after the Full MSI broadcast is issued, the Inshore Forecast and any Gale Warnings that are in force are repeated. This is followed a further three hours later (6 hours after the full MSI broadcast) by one of two new additional Interim Inshore Forecasts. These consist of a new inshore forecast together with the 24 hour outlook from the full MSI broadcast (6 hours earlier) and any Gale warnings. A further three hours later (9 hours after the Full MSI broadcast) there is a repetition broadcast. Three hours later the cycle starts again with a full MSI broadcast.

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. Strong Wind Warnings (SWW) serve as a function of the Inshore Forecasts similar to the way in which Gale Warnings do to the Shipping Forecast. If the wind is forecast to exceed force 6 but this was not identified in the previous Inshore Forecast a SWW will be issued. It will then be incorporated into the next Inshore Forecast.

Changes were also made to the WZ navigation warnings with the boundaries being realigned to coincide with the Inshore Forecast area boundaries. This applies to the landward boundaries which will extend seawards in revised directions aligned with one of the 8 cardinal points of the compass. Whereas the Inshore Forecast extends to 12 miles offshore, the offshore limits of the WZs will remain unchanged. This provides the user with more focused information.

To avoid ambiguity with the limits of the Inshore Forecast (WZ) Areas the area limit previously referred to as The Wash, changed to Gibraltar Point - the prominent headland at the northern end of the Wash. Similarly, the area limit referred to as Colwyn Bay was redefined as Great Orme Head.

Rigmoves and pipe laying operations have been deemed to be sufficiently visible by sight, by radar and through local navigation warnings, therefore these will not be included with the VHF MSI broadcasts (NAVTEX remains unchanged).

In 2006 an additional inshore forecast area for the Isle of Man up to 12 miles offshore was establish. This area remains and the Isle of Man is therefore, is no longer part of the Colwyn Bay to the Mull of Galloway forecast area.The transmissions from 2 MRCCs have where possible been combined to form an Area Broadcast. For example Solent CG and Portland CG broadcast simultaneously, each station broadcasting the same information thus providing slightly more information than was previously the case.

The MCA has taken onboard the practicality of the listener recording the information being broadcast and has asked for the transmissions to be made at dictation speed.