Machine translation from English source
Observation
The duty of the officer of the watch is to maintain effective watch at all times.
Between sunset and sunrise there should be a lookout on the bridge, as well as an officer of the watch. During daylight hours, if navigational circumstances permit, the officer in charge of the watch may be assigned duties away from the bridge, and during such times the officer in charge of the watch shall perform the duties of the watch officer, but at all such times the assigned watch officer must be readily available to be called to the bridge if the officer in charge of the watch will require the services of a watchman.
On ships having a separate chart room, the officer of the watch may visit the chart room when necessary for a short period of time to perform necessary navigational duties, but must first ensure that it is safe to do so.
Call the master - constant instructions and daily orders
The master must ensure that there are clear instructions on the bridge regarding sailing procedures in the form of standing instructions and daily orders in the "master's order book". Such instructions should reflect any special requirements that may be placed on the technician.
The master (start captain) must be called under the following circumstances:
When reduced visibility is detected or suspected.
When it comes to traffic.
Conditions or movements of other vessels cause
Whenever a significant change to a pre-planned course is required, other than for necessary collision avoidance.
When difficulties arise in maintaining the course.
When the Earth or navigation mark cannot be seen, or when a sounding cannot be obtained by the expected time.
When a ground or navigation mark is unexpectedly detected or a sounding change occurs.
Whenever there is an unusually large compass error.
In the event of serious engine failure, steering gear failure or failure of any major navigational equipment which may cause the vessel to float.
Impact security
When in adverse weather conditions it is believed that the ship or its cargo may be damaged by continuing on its current course and speed.
When the ship encounters any navigational hazards such as ice or debris.
When any one aspect of his duties requires his undivided attention and therefore he is unable to attend to his other duties.
If any emergency or situation arises in which he has any doubts or which he believes, the master (start captain) must be aware.
Notwithstanding the above, the master must give clear written instructions in the master's order book as to when the master should be called in addition to the above and it must be clear to all that the master is available at all times and that the officer of the watch must not hesitate to request the master to attend bridge when deemed necessary or appropriate.
