1. A bell book, in standard form, shall be used on the bridge and in the engine room, in case the data-logger is not working. (For vessels fitted with data-logger).
2. In the bell book shall be recorded the times of every order in respect of propeller movements, (including "Stand-by" and "Finished with engines") as transmitted to. and confirmed by the engineer in charge of main engine.
3. A double ring on the "telegraph" shall be made to signal Emergency-Stop, Emergency-FulI-Astern or Emergency-Full Ahead. The bell book entry in such cases shall be proceeded or followed by the letter «E».
4. Time shall be recorded in the 24 hour system, to the nearest minute, as indicated by the bridge and engine room clock respectively.
Bridge and engine room clocks shall be synchronized before shifting, entering or leaving port and whenever clocks are advanced or retarded.
5. The entries in the bell book shall be made by the person handling the "telegraph". The person making the entries shall sign his name at the end of the entries recorded by him.
6. In addition to propeller movement-orders. entries may be made concerning events of which a record is desired. These additional entries shall not however substitute entries to be made in the ship’s log books.
7. No erasures shall be made, errors shall be crossed out and initialed.
8. The bell book is a supplement to the ship’s log books, and datalogger sheets. It is to remain as part of The permanent records of the vessel.