IMO Resolution A.917(22) - AIS Flashcards
(30 cards)
The OOW should always be aware that AIS fitted on other ships as a mandatory carriage requirement might, under certain circumstances, be __________________ on the master’s professional judgement.
switched off
Specific vessel types (e.g. _________________, naval auxiliaries and ________________________) are not required to be fitted with AIS.
warships / ships owned or operated by Governments
Small vessels (e.g. __________________, _______________________) and certain other ships are exempt from carrying AIS.
leisure craft / fishing boats
Users are therefore cautioned always to bear in mind that information provided by AIS may not be giving a ____________________ ‘picture’ of shipping traffic in their vicinity
complete or correct
SOLAS regulation V/19 requires that AIS exchange data ship-to-ship and with ________________________.
shore-based facilities
The purpose of AIS is to help __________________; assist in target tracking; simplify information _________________ (e.g. reduce verbal mandatory ship reporting); and provide additional information to assist situation awareness.
identify vessels / exchange
Shipborne AIS enables provision of fast, automatic information by calculating _____________________________ and ______________________________________ from the position information transmitted by the target vessels.
Closest Point of Approach (CPA) / Time to Closest
Point of Approach (TCPA)
In practice, the capacity of the system is ____________________.
unlimited
The AIS is able to detect ships within_________________ range around bends and behind islands, if the landmasses are not too high. A typical value to be expected at sea is _____ to ______ nautical miles depending on antenna height.
VHF/FM - 20 - 30
Information from a shipborne AIS is transmitted ____________________ and ________________ without any intervention or knowledge of the OOW.
continuously / automatically
The AIS information transmitted by a ship is of three different types: _____________________ , _______________________ and ______________________.
fixed or static information / dynamic information / voyage-related information
Fixed or static information is entered into AIS on installation and need only to be changed if the ship changes its ____________ or undergoes a major conversion from one ship _____________ to another.
name / type
Dynamic information, apart from ‘Navigational status’ information, is ___________________ updated from the ship ______________ connected to AIS
automatically / sensors
The voyage-related information might need to be ______________________ and ________________ during the voyage.
manually entered / updated
Position, heading, ______________________ , ______________________ , __________________________ and ______________________are contained in the dynamic information.
course over ground (COG) / speed over ground (SOG) / navigational status / rate of turn
Destination and ETA, Route plan (waypoints), _____________________ and _______________________ are voyage-related information
ship’s draught / hazardous cargo (type)
Dynamic information is sent at an update rate dependent on ________________ and _______________ alteration.
speed / course
Static and voyage-related data have an update rate of every _____ minutes or ____________________.
6 / on request
AIS short safety-related messages are fixed or free format text messages addressed either to a __________________________ or all ships in the area.
specified destination (MMSI)
AIS should always be in operation when ships are ____________________ or ________________. If the master believes that the continual operation of AIS might compromise the safety or security of his/her ship, the AIS may be ______________________.
underway / at anchor / switched off
If the AIS is shut down, _________________ and ______________ related information remains stored.
static data / voyage
In ports AIS operation should be in accordance with _________________________.
port requirements
The minimum mandated display provides not less than three lines of data consisting of _______________, ________________ and ____________ of a selected ship.
bearing / range / name
A _______________ target indicates only the presence of a vessel equipped with AIS in a certain location.
sleeping
