A

AA	Always Afloat
AAAA	Always Afloat, Always Accessible
AAOSA	Always Afloat Or Safe Aground
AAR	Against All Risks
AARA	Always Accessible or Reachable on Arrival
AB	Able Seaman
ABS	American Bureau of Shipping
AC	Alternating Current (electricity)
ACV	Air Cushion Vehicle
AD	Area Differential
ADF	Automatic Direction Finder
AF	Anti-Fouling
AFFF	Aqueous Film Forming Foam
AFRA	Average Freight Rate Assessment
AG	Arabian Gulf
AGW	Actual Gross Weight
	All Going Well
AHTS	Anchor Handling Tug and Supply Vessel
AIS	Automatic Identification System
ALERT	Automatic Life-saving Emergency Radio Transmitter
ALRS	Admiralty List of Radio Signals
AMSL	Above Mean Sea Level
AMVER	Automated Mutual Assistance Vessel Rescue System
AMWELSH	Americanised Welsh Coal Charter party
ANERA	Asia-North America Eastbound Rate Agreement
ANOP	Articles Not Otherwise Provided for
ANSI	American National Standard Institute
AO	Awaiting Orders
	And Other
AOB	Any One Bottom
AOH	After Office Hours
AOLOC	Any One Location
AOR	Atlantic Ocean Region
AOS	Any One Steamer
AOV	Any One Vessel
AP	All Purposes
	Additional Premium
	Aft Perpendicular
API	American Petroleum Institute
APS	Arrival Pilot Station
APT	Aft Peak Tank
ARA	Antwerp – Rotterdam – Amsterdam
ARPA	Automatic Radar Plotting Aid
A/S	Alongside
ASAP	As Soon As Possible
ASBA	The Association of Shipbrokers and Agents (USA) Incorporated, New York
ASCII	American Standard Code for Information Interchange
ASPW	Any Safe Port in the World
ASTM	American Society of Testing & Materials
ATA	Actual Time of Arrival
ATD	Actual Time of Departure
ATDN	Any Time Day & Night
ATDNSHINC	Anytime Day/Night Sundays & Holidays Included
ATK	Aviation Turbine Kerosene
ATS	All Time Saved
ATSBE	All Time Saved Both Ends
ATSDO	All Time Saved Discharging Only
ATUTC	Actual Times Used To Count
AUV	Autonomous Underwater Vehicle
AVGAS	Aviation Gasoline
AVR	Automatic Voltage Regulator
AVTAG	Aviation Turbine Gasoline
AWIWL	Always Within Institute Warranty Limits
AWVNS	Always Within Vessel`s Natural Segregation
AWRI	Additional War Risk Insurance