Military Time and Shipboard Terminology. Learning Objectives Upon successful completion of this...
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Military Time and Shipboard Terminology
Military Time and Shipboard Terminology. Learning Objectives Upon successful completion of this topic the trainee will be able to perform the following:
Learning Objectives Upon successful completion of this topic
the trainee will be able to perform the following: 1.Convert
Standard time to Military time 2.Understand the use of the ships
bell 3.Identify types of shipboard terms 4.Identify types of ship
hull structures 5.Identify types of shipboard decks 6.Ship
Compartment Numbering
Slide 3
Military Time The military uses the 24-hour system of keeping
time, with the day starting at midnight. Four numerals are used to
indicate the time - the first two digits indicating hours and the
last two representing minutes. The hour of midnight is expressed
two ways: 0000 to indicate the start of the date and 2400 to
indicate the end of the day. Each hour, starting at midnight, is
increased by 100 (0000, 0100, 0200, 0300 and so on) until 2400 is
reached. Time is spoken in hundreds. For example, 0100 (1:00 am) is
pronounced 'ZERO ONE HUNDRED', 2000 (8:00 pm) is pronounced 'TWENTY
HUNDRED', 2315 (11:15 pm) is pronounced 'TWENTY THREE FIFTEEN'.
Converting time on a 12-hour clock to military time is an easy
matter. The hours from midnight to noon present no problem; from
noon to midnight, simply add 12 hours to the time indicated
Slide 4
Standard Time To Military Time Standard Time Military Time
Standard Time Military Time 12:00 PM/AM2400/000012:00 PM1200 12:15
AM001512:15 PM1215 12:30 AM003012:30 PM1230 12:45 AM004512:45
PM1245 1:00 AM01001:00 PM1300 2:00 AM02002:00 PM1400 3:00
AM03003:00 PM1500 4:00 AM04004:00 PM1600 5:00 AM05005:00 PM1700
6:00 AM06006:00 PM1800 7:00 AM07007:00 PM1900 8:00 AM08008:00
PM2000 9:00 AM09009:00 PM2100 10:00 AM100010:00 PM2200 11:00
AM110011:00 PM2300
Slide 5
Military Time to Ship Bells The use of the bells to mark the
time stems from the period when seamen (1) could not afford a
personal time piece (i.e. - a watch) and (2) even if they could,
they had no idea on how to tell time with such an instrument. The
bells mark the hours of the watch in half-hour increments. The
seamen would know if it were morning, noon, or night. Each watch*
is four hours long and the bells are struck thus:hours of the watch
Notes: * - The period from 1600 to 2000 is split into two dog
watches. These watches run from 1600 to 1800 and from 1800 to 2000.
This alternates the daily watch routine so Sailors on the mid-watch
would not have it the second night, and, the split also gives each
watchstander the opportunity to eat the evening meal. ** - The end
of the watch is considered at 8 bells, hence the saying "Eight
Bells and All Is Well."
Slide 6
TERMINOLOGY
Slide 7
Shipboard Terms
Slide 8
1.FORE and AFT is the lengthwise direction of the ship.
2.ATHWARTSHIP is the crosswise direction of the ship. 3.BOW is the
front of pointy end of the ship. 4.STERN is the rearmost or backend
of the ship. 5.CENTERLINE is the center of the ship from BOW to
STERN. 6.STARBOARD is the right side of the ship. 7.PORT is the
left side of the ship. 8.AMIDSHIPS is the middle part of the ship.
9.TOPSIDE is a general term referring to the weather decks.
10.BELOW is downward, beneath or beyond something, as to lay below.
11.AHEAD is the direction in front of you. 12.ASTERN is the
direction behind you.
Slide 9
Structural Terms
Slide 10
1.KEEL is the backbone of the ship and it's where all the
frames start from. 2.FRAMES run from the keel upward towards the
main deck. 3.LONGITUDINALS are frames that run parallel to the
keel. 4.STANCHIONS are vertical posts used for supporting decks and
smaller ones used to support lifelines. 5.BULKHEADS are vertical
walls on the interior part of the ship or building.
Slide 11
Hull Terms
Slide 12
1.WATERLINE is the water level along the hull of the ship.
2.DRAFT is the vertical distance from the keel to the waterline/
3.FREEBOARD is the distance from the waterline to the main deck.
4.DECKS are the floors of a ship of a building. 5.OVERHEADS are the
ceilings of a ship or a building. 6.COMPARTMENTS are the spaces
inside a ship or building. 7.FORECASTLE (pronounced FOHK' SEL) is
the forward section of the main deck. It's the part of the main
deck from the bow to just abaft of the Anchor Windlass. 8.FANTAIL
is the aft end of the main deck. 9.LIFELINES, in general, are the
lines around the weather decks. 10.WEATHER DECK is the deck or part
of a deck exposed to the weather. 11.SUPERSTRUCTURE is the ship's
structure above the main deck.
Slide 13
Types of Decks
Slide 14
DECK is a level of the ship or building. COMPLETE DECK is a
deck that extends from side to side and bow to stern. MAIN DECK is
the uppermost complete deck. FORECASTLE (pronounced FOHK' SEL) is
the forward section of the main deck. It's the part of the main
deck from the bow to just abaft of the Anchor Windlass. It is also
known for being a deck above the main deck at the bow. HALF DECK is
any partial deck between complete decks. FLATS are plating or
grating installed only to provide working or walking surfaces above
the bilges. LEVELS is a general term used to designate decks above
the main deck and decks in the engine room. QUARTERDECK is an area
designed by the Commanding Officer as the place to carry out
official functions and normally located at the ship's brow.
Slide 15
Ship Compartment Numbering
Slide 16
Compartments are numbered for identification to facilitate
location. The identification number assigned locates each
compartment specifically, and generally indicates the function and
use of the compartment. Compartment numbers consist of four parts,
separated by hyphens, for example 2-20-0-L, in the following
sequence: 1.Deck Number 2.Frame Number 3.Position in relation to
centerline of ship 4.Compartment use Compartment Numbering
Slide 17
Deck Number Compartment Numbering The main deck is the basis
for this numbering scheme and is numbered 1. The first deck below
the main deck is numbered 2, and so on. The first horizontal
division above the main deck is numbered 01, and the numbers
continue consecutively for subsequent upper division boundaries.
Compartments are numbered by the lowest deck within the space. 2 -
20-0-L
Slide 18
Frame Number Compartment Numbering The forward perpendicular is
the basis for this numbering scheme and is numbered "0" (zero).
"Frames" are consecutively numbered, based on frame spacing, until
the aft perpendicular is reached. Forward of the forward
perpendicular, frames are "lettered" starting from the
perpendicular to the bull nose (A, B, C, etc.) while frames aft of
the after perpendicular are "double lettered" to the transom (AA,
BB, CC, etc.). Compartments are numbered by the frame number of the
foremost bulkhead of the compartment. If this bulkhead is located
between "frames," the number of the foremost "frame" within the
compartment is used. Fractional numbers are not used except where
frame spacing exceeds four feet. 2- 20 -0-L
Slide 19
Frame Number Compartment Numbering 2- 20 -0-L
Slide 20
Position in relation to centerline of ship Compartment
Numbering The ship's centerline is the basis for this numbering
scheme. Compartments located so that the centerline of the ship
passes through them are assigned the number 0. Compartments located
completely to starboard of the centerline are given odd numbers,
and those to port of centerline are given even numbers. The first
compartment outboard of the centerline to starboard is 1, the
second is 3 and so forth. Similarly, the first compartment outboard
the centerline to port is 2, the second is 4 and so forth. There
may be cases in which the centerline of the ship would pass through
more than one compartment, all of which may have the same forward
bulkhead number. Whenever this occurs, that compartment having the
portion of the forward bulkhead through which the centerline of the
ship passes is assigned the number 0 and the other carry numbers
01, 02, 03 etc. 2-20- 0 -L
Slide 21
Compartment Use Compartment Numbering A capital letter is used
to identify the assigned primary use of the compartment. Only one
capital letter is assigned, except that on dry and liquid cargo
ships a double letter identification is used to designate
compartments assigned to carry cargo. Examples of compartment use
are storage areas, various tanks, and living quarters. Some
examples from NSTM 079 volume 2: A - Storage area C - Ship and Fire
Control operating spaces normally manned E - Machinery spaces which
are normally manned F - Fuel or Fuel Oil tanks J - JP-5 tank L -
Living quarters M - Ammunition (stowage and handling) Q - Areas not
otherwise covered T - Vertical access trunk V - Void 2-20-0- L
Slide 22
Bringing it all together Compartment Numbering We can determine
that it is located: 2one deck below the Main Deck, 30 foremost
bulkhead is at frame 30, 0centered upon the centerline of the ship,
and L is used as a living space. Compartment: 2-30-0-L