Regulation 41 Communication between navigating bridge and machinery spaceI1
United Kingdom
Every ship shall be provided with two means for communicating orders from the navigating bridge to the position in the machinery space or machinery control room from which the main engines are normally controlled. One of the means shall be an engine room telegraph.
Additional requirements for ships constructed on or after 1st September 1984
The means for communicating orders referred to in paragraph (1) shall be independent of each other. In addition, means of communication shall be provided to any other position from which the main engines may be controlled.
Additional requirements for ships constructed on or after 1st October 1994
Appropriate means of communication shall be provided from the navigating bridge and the engine-room to any other position from which the speed or direction of thrust of the propellers may be controlled.