Other Dangers to Navigation
M.S. Act – Part XI – Sec. 354
- Master shall send report, by all possible means of communication, to ships in vicinity and the prescribed authorities, if he encounters the following :
- Dangerous ice
- Dangerous derelict
- Tropical storm i.e. hurricane, typhoon, cyclone, etc.
- Direct danger to navigation.
- Sub-zero air temperature, associated with gale force winds, causing severe ice accretion on the super-structure.
- Strong gale of wind force
10 for which there was no storm warning.
- The authority receiving the above information shall communicate the same to all ships and authorities as soon as possible.
SOLAS – Chapter V
- Every State shall ensure that if any danger messages are received from any reliable source, these shall be promptly communicated to all concerned.
- Message may be in any form, either in plain language (preferably in English) or by means of International code of signals and preceded by safety signal TTT or SAYCURITY.
- It shall be free of cost to the ship.
- Following information shall be included in the message :
- In case of ice, derelict or other direct danger to navigation —
- Kind of danger.
- Its last position.
- Date and time (UCT) when it was last observed.
- In case of tropical storm —
- Date, time (UCT) and position of the ship when it was observed.
- Barometric pressure.
- Barometric tendency during the past 3 hours.
- True wind direction and force.
- State of sea.
- Swell condition, true direction, period or length.
- True course and speed of the ship.
- Further observations may be made and transmitted every 1 to 3 hours as long as the ship is under the influence of the storm.
- In case of winds of force
10, other than tropical storm, for which there was no storm warning —
- Date, time (UCT) and position of the ship when it was observed.
- Barometric pressure.
- Barometric tendency during the past 3 hours.
- True wind direction and force.
- True course and speed of the ship.
- In case of sub-freezing air temperature, associated with gale force winds, causing severe ice accretion on superstructure —
- Date and time (UCT).
- Air and sea temperatures.
- Wind force and direction.