The master of every ship which meets the following

	Dangerous Ice.
	Dangerous Derelict.
	Any other direct danger to navigation.
	A TRS
	Encounter sub freezing air temperature associated with gale force wind causing ice accretion.
	Winds of force 10 or above

Is bound to communicate the information by all means to all ships & the costal authority.

Form is not obligatory, may be in plain language (preferable English) or by ICS.