Pop down to your local yacht club. These are yacht club frequencies.
Channels set aside by the United Kingdom administration, for matters relating to mooring, berthing and race control. There are three marina channels:
Channel "M" (157.850 MHz)
Channel "M2" (161.425 MHz)
Channel "80" (157.025/161.625)
Channels M and M2 are UK channels and should only be used in UK territorial waters. Their on-board use is covered by a Ship Radio License. However, equipment that is only capable of operating on these frequencies is usually licensed under a Coastal Station Radio License and it is not necessary for the operator to hold an operator's certificate.