Machine translation from English source
International Regulations for Preventing Collisions at Sea
The officer of the watch must strictly observe the international rules for preventing collisions at sea, and if, in accordance with these rules, he is obliged to give way to another vessel, he must do so quickly enough and in such a way that the measures taken cannot be misinterpreted. Where local conditions permit, crowded quarter situations should be avoided.
Well
The officer of the watch must check the course every afternoon at sea for the next 24 hours in accordance with the captain's instructions and the passage plan. These courses must be carefully checked by each officer of the watch. The master must be informed when it becomes necessary to make large deviations from the intended course, and a full assessment of all relevant facts must be made before deviating from the planned passage.
Fixing the position
(job for captain)
The officer of the watch must take advantage of every opportunity to repair the ship.
position. If a ship is sailing in coastal waters with lights, then positions should be determined by ground observations at frequent intervals, so that any deviation from the intended path is immediately recorded.
The position of the vessel should always be plotted on the chart at intervals of no more than 30 minutes. When no lights or signs are visible, at least one position line is determined by astronomical observation during each watch, if possible. Elements of observations must be recorded in the ship's logbook.
Navigation Lights - Observation Deck
At least once every hour, the officer of the watch must check that the navigation lights are correctly positioned and that the officer of the watch, where applicable, is at his post.
Distance from other vessels (work for the captain)
The watchman must constantly monitor all vessels and report this to the officer.
Adequate distance from other vessels must always be maintained and, unless circumstances require, other vessels must never pass within one mile. In conditions of limited visibility, the distance should be even greater.
Steering
It is the duty of the officer of the watch to frequently check the correctness of the chosen course.
Speed
If the officer of the watch considers that circumstances are such that it is necessary to reduce speed or stop or reverse the engines, he should not hesitate to do so, even if there is no time to notify the master in advance.
Attention to duty hours(job for captain)
Nothing at all should deter the officer of the watch from giving full attention to the safe navigation of the vessel and good seamanship in general.
The calculation of observations and the use of instruments should not divert the attention of the officer of the watch from what is his primary responsibility, namely his undivided attention to the bridge watch. Visits to the chart room, especially at night, should be for the shortest possible periods, as it takes some time for vision to adjust to darkness after exposure to light.
