Article 18
Measures in the event of exceptionally bad weather 1. Where the competent authorities designated by Member States consider, in the event of exceptionally bad weather or sea conditions, that there is a serious threat of pollution of their shipping areas or coastal zones, or of the shipping areas or coastal zones of other States, or that the safety of human life is in danger: (a) they should, where possible, fully inform the master of a ship which is in the port area concerned, and intends to enter or leave that port, of the sea state and weather conditions and, when relevant and possible, of the danger they may present to his/her ship, the cargo, the crew and the passengers; (b) they may take, without prejudice to the duty of assistance to ships in distress and in accordance with Article 20, any other appropriate measures, which may include a recommendation or a prohibition either for a particular ship or for ships in general to enter or leave the port in the areas affected, until it has been established that there is no longer a risk to human life and/or to the environment; (c) they shall take appropriate measures to limit as much as possible or, if necessary, prohibit the bunkering of ships in their territorial waters. 2. The master shall inform the company of the appropriate measures or recommendations referred to under paragraph 1. These do not however prejudice the decision of the master on the basis of his/her professional judgement corresponding to the SOLAS Convention. Where the decision taken by the master of the ship is not in accordance with the measures referred to under paragraph 1, he/she shall inform the competent authorities of the reasons for his/her decision. 3. The appropriate measures or recommendations, referred to under paragraph 1, shall be based upon a sea state and weather forecast provided by a qualified meteorological information service recognised by the Member State.