numerous or rapid speed changes. This allows the
calendar day of each month and on the day he
throttle operator to give complete attention to
answering the bells.
The ship maintains completed Engineering
Log sheets in a ring or post binder and retains
All entries made in the Engineer's Bell Book
them on board for 3 years. Personnel making
must follow the Instructions for Keeping the
entries in the Engineering Log number the pages
Engineer's Bell Log, NAVSEA 3120/l (8-85). It
consecutively. A new series of page numbers
is maintained in the following manner:
commences on the first day of each month.
1. Use a separate bell sheet for each shaft each
Engineer's Bell Book
day. When a station controls more than one shaft,
use the same sheet for all shafts controlled by that
The Engineer's Bell Book, NAVSHIPS
3120/1, shown in figure 2-5, is a record of all
orders received by the station in control of the
2. Record the time the order was received in
throttles regarding a change in the movement of
column 1 (fig. 2-5).
the propellers. The throttle operator (or assistant)
3. Record the order received in column 2.
makes entries as soon as he receives an order. An
Record minor speed changes by entering the
assistant may make entries when the ship is in a
revolutions per minute (rpm) or pitch change
special maneuvering situation that may call for
Figure 2-5.--Engineer's Bell Book, NAVSHIPS 3120/1.