ENGINEMAN 1 & C
commanding officer (or engineer officer) enters
such remarks over his signature as he deems ap-
propriate. After the log has been signed by the
commanding officer, no change is permitted
without his permission or direction.
Completed Engineering Log sheets are filed
in a post-type binder. Pages of the log are
numbered consecutively with a new series of page
numbers commencing with the first day of each
calendar year.
ENGINEER’S BELL BOOK.—The
Engineer’s Bell Book, NAVSEA 3120/ 1 (figure
2-2), is a record of all bells, signals, and other
orders received by the throttleman regarding
movement of the ship’s propellers. Entries are
made in the Bell Book by the throttleman (or an
assistant) as soon as an order is received. Entries
may be made by an assistant when the ship is
entering or leaving port, or engaging in any
maneuver which is likely to involve numerous or
rapid speed changes. This procedure allows the
throttleman to devote his undivided attention to
answering the signals.
The Bell Book is maintained in the following
manner:
1. A separate bell sheet is used for each shaft
each day, except where more than one shaft is
controlled by the same throttle station, in which
case the same bell sheet is used to record the orders
for all shafts controlled by the station. All sheets
for the same date are filed together as a single
record.
2. The time of receipt of the order is recorded
in column number 1 (figure 2-2).
3. The order received is recorded in column
number 2. Minor speed changes (generally re-
ceived via revolution telegraph) are recorded by
entering the number of rpm ordered. Major speed
changes (normally received via engine order
telegraph) are recorded using the following
symbols:
1 / 3 — ahead 1/3 speed
2/3
— ahead 2/3 speed
I
— ahead standard speed
II
— ahead full speed
III
— ahead flank speed
Z
— stop
B1/3
—back 1/3 speed
2-4
B2/3
— back 2/3 speed
BF
— back full speed
BEM —back emergency speed
4. The number of revolutions corresponding
to the major speed change ordered is entered in
column 3. (NOTE: When the order received is
recorded as rpm in column 2 (minor speed
changes), no entry is made in column 3.)
5. The shaft revolution counter reading (total
rpm) at the time of the speed change is recorded
in column 4. The shaft revolution counter
reading—as taken hourly on the hour, while
underway—also is entered in column 4.
Ships and craft equipped with controllable
reversible pitch propellers record in column 4 the
propeller pitch in feed and fractions of feet set
in response to a signaled speed change, rather than
the shaft revolution counter readings. The entries
for astern pitch are preceded by the letter B. Each
hour on the hour, entries are made of counter
readings, thus facilitating the calculation of engine
miles steamed during those hours when the
propeller pitch remains constant at the last value
set in response to a signaled order.
Before going off watch, the EOOW signs the
Bell Book on the line following the last entry for
his watch and the next EOOW continues the
record immediately thereafter. In machinery
spaces where an EOOW is not stationed, the bell
sheet is signed by the watch supervisor.
The Bell Book is maintained by bridge per-
sonnel in ships and craft equipped with con-
trollable reversible pitch propellers, and in which
the engines are directly controlled from the bridge.
When control is shifted to the engineroom,
however, the Bell Book is maintained by the
engineroom personnel. The last entry made in the
Bell Book on the bridge indicates the time that
control is shifted; and the first entry made in the
Bell Book in the engineroom indicates the time
that control is taken by the engineroom.
Similarly, the last entry made by engineroom per-
sonnel indicates when control is shifted to the
bridge. When the Bell Book is maintained by the
bridge personnel, it is signed by the officer of the
deck (OOD) in the same manner as prescribed for
the EOOW.
Alterations or erasures are not permitted in
the Bell Book. An incorrect entry is corrected by
