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Terminology: Abbreviations

Using abbreviations

Names and titles relating to our own products (units, boxes and other hardware and software devices or functions) shall not be abbreviated.

Other common abbreviations - such as in technology and science matters - are abbreviated as defined in the Chicago Manual of Style. See chapter 10 (page 487). A limited selection is provided below.

Dates are written according to the international standard ISO 8601.

Times are written according to the international standard ISO 8601.

Common abbreviations

These common abbreviations are extracted from the Chicago Manual of Style and/or Microsoft Manual of Style. Some abbreviations are defined by Kongsberg Maritime. All abbreviations must be used as they appear in this list.


Abbreviation Description and comments
ac Alternating current
ADSL Asymmetric Digital Subscriber Line
AM Amplitude modulation
ASCII American Standard Code for Information Interchange – do not spell out
BIOS Basic Input/Output System – do not spell out unless the abbreviation is unfamiliar to your audience
bps Bits per second
Bps Bytes per second
CD Compact Disc
CPU Central Processing Unit
dc Direct current
dB decibel
deg Degrees – only use the degrees character (°) on temperatures!
dpi dots per inch
ft Feet – you can also use the character ’ (prime), but this is not recommended
Gb Gigabit – do not abbreviate
GB Gigabyte
Gbps Gigabits per second
GUI Graphical user interface – spell out unless the abbreviation is familiar to your audience
h Hour
in. Inch – always include period – you can also use the character ” (double prime), but this is not recommended
kbit Kilobit – do not abbreviate
Kbps Kilobits per second
KB Kilobyte
Kbps Kilobits per second
kg Kilo
kHz Kilohertz
kn Knot (as in vessel speed)
kV Kilovolt
kW Kilowatt
L Litre
LAN Local area network – do not spell out unless the abbreviation is unfamiliar to your audience
LED Light-emitting diode
Mb Megabit – do not abbreviate
MB Megabyte
Mbps Megabits per second
MMI Man-machine interface – do not use this phrase, use GUI or UI
ppi Pixels per inch
RAM Random access memory
rpm Revolutions per minute
s second
Tb Terrabit
TB Terrabyte
Tbps Terrabits per second
UI User interface – spell out unless the abbreviation is familiar to your audience
UPS Uninterruptible Power Supply – spell out unless the abbreviation is familiar to your audience
V Volt
Vac Voltage with alternating current – no space
Vdc Voltage with direct current — no space
Wi-Fi The term "Wi-Fi" is used in general English as a synonym for WLAN – do not use, write “wireless network”
WLAN Wireless local area network – do not use, write “wireless network”

Date format

The international standard ISO 8601 specifies numeric representations of date and time.

We shall use this standard in our documents.

The international standard date notation is:

YYYY-MM-DD

where YYYY is the year in the usual Gregorian calendar, MM is the month of the year between 01 (January) and 12 (December), and DD is the day of the month between 01 and 31.

For example, the fourth day of February in the year 2013 is written in the standard notation as

2013-02-04

Time format

ISO 8601 uses the 24-hour clock system. The basic format is [hh][mm][ss] and the extended format is [hh]:[mm]:[ss].

We shall use the extended date format in our documents.

  • [hh] refers to a zero-padded hour between 00 and 24 (where 24 is only used to notate midnight at the end of a calendar day).
  • [mm] refers to a zero-padded minute between 00 and 59.
  • [ss] refers to a zero-padded second between 00 and 60 (where 60 is only used to notate an added leap second).

It is acceptable to omit lower order time elements for reduced accuracy, use [hh]:[mm] or simply [hh].

Examples:

09:15:20

13:20



Terminology

Related topics

Standards for writing and grammar rules

  • Microsoft Style Guide, 4th Edition, Microsoft Press, Washington, 2012, ISBN 978-0-7356-4871-5
  • Chicago manual of Style, 16th Edition, University of Chicago Press, Chicago, 2012, ISBN 978-0-226-10420-1

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