ENG

Bridge with one person on watch

10.09.2021

Bridge with one person on watch

Ships can have an optional class notation for optimizing the environ­ment on the bridge for navigational tasks including periodic operation of the ship under the supervision of a single watchkeeper. The re­lated requirements are in addition to those applicable in other parts of the Rules. The requirements are based on the understanding that the International Regulations for Preventing Collisions at Sea and all other relevant regulations relating to Radio Communication and Safe­ty of Navigation are complied with.

   Мостик с одним вахтенным

The next step up, and a consequen­tial development is the Integrated Bridge.

Today's state of the art wheelhous­es are suitable for operation and watchkeeping by one person only. Apart from wheelhouse layout re­quirements with respect to an all- around view, also the view from the operator positions needs to be looked at. On a standard bridge the view from the conning position is more important than the view from the steering position. The conning position is for the officer on watch, the man behind the wheel follows the orders from the officer on watch.

Bridge with one person on watch

Однолинейная диаграмма интегрированной навигационной и командной системы. Все функции доступны с любой рабочей станции

The next step up, and a consequen­tial development is the Integrated Bridge.

Today's state of the art wheelhous­es are suitable for operation and watchkeeping by one person only. Apart from wheelhouse layout re­quirements with respect to an all- around view, also the view from the operator positions needs to be looked at. On a standard bridge the view from the conning position is more important than the view from the steering position. The conning position is for the officer on watch, the man behind the wheel follows the orders from the officer on watch.

A workstation for navigation needs to contain the following facilities: 

- Two independent radars, one in X-band, one in S-band, one of them with ARPA function,
-  Indicators from two independent autopositioning fixing systems,
-  Echosounder with shallow depth warning,
-  Log with speed and distance in­dication, speed in water for the ARPA function,
-  Speed over bottom for autotrack function,
-  Gyrocompass display,
-  Magnetic compass display,
-  Wind speed and direction indica­tor for ships sensitive to wind,
-  Steering controls and indicators,
-  Main propulsion and thruster controls.
-  Internal communication systems
-  VHF radiotelephones
-  Clock
-  Window wipers and clear view screen controls
-  Navigation light controls and alarms
-  Whistle controls
-  Decklighting controls

This list shall be completed with additional equipment as required for the special purpose of the ship, when applicable.

A voyage-planning workstation shall be provided with a chart ta­ble with instruments, position fixing systems and time indication.

A navigation alarm system shall be fitted consisting of following alarms: 

-  Closest point of approach from ARPA radar,
-  Shallow water warning from echosounder,
-  Off-course alarm from a direc­tional device,
-  Navigation light failure,
-  Power failure to the navigation and nautical supply panels.

Any of these alarms has to be ac­cepted by the watchkeeper within 1 minute.

Bridge with one person on watch

Display on conning position

 1. Wind
 2. Speed (speed over ground)
 3. Course record
 4. Rate of turn
 5. Heading
 6. Course
 7. Speed (speed through wa­ter)
 8. Propulsion information
 9. Rudder positions
10. Voyage planning
11. Position
Also the watchkeeper safety timer (11 minutes) has to be accepted by the watchkeeper within 1 minute. When acknowledgement is not giv­en by pushing a button, the captain and the second watch keeper on duty will be alarmed.

Alternative for the reset of the safety timer, operation of any of the bridge equipment may reset the timer. It is then advised to reduce the time-leg

Bridge with one person on watch

Required view from conning position and naviga­tion workstation

Bridge with one person on watch

Required view from bridge wing

Bridge with one person on watch

Required field of view from main steering position"

Bridge with one person on watch

Maximum allowed dead angle in sight line from bridge


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