2-21  Section 2 Name and Function of Each Unit 
 
 
 
APP A 
APP B 
 
 
Displays the expected arrival time of an AIS target. 
Navigation Status  Displays the navigation conditions of an AIS target. 
0: Under Way Using Engine 
1: At Anchor 
2: Not Under Command 
3: Restricted Manoeuvrability 
4: Constrained by Her Draught 
5: Moored 
6: Aground 
7: Engaged in Fishing (fishing boat)   
8: Under Way Sailing (sailing ship)   
9: Reserved for HSC 
10: Reserved for WIG 
11: Reserved 
Displays the draft of an AIS target. 
Type of Ship  Displays the ship type of an AIS target. 
30: Fishing Vessel 
31: Towing Vessel 
32: Towing Vessel L>200M B>25M (Towing and length of the tow 
exceeds 200m or breadth exceeds 25m) 
33: Dredge or Underwater OPE (Engaged in dredging or underwater 
operation) 
34: Vessel-Diving OPE (Engaged in diving operation) 
35: Vessel-Military OPE (Engaged in military operation) 
36: Sailing Vessel 
37: Pleasure Craft 
50: Pilot Vessel 
51: Search and Rescue Vessels 
52: Tugs 
53: Port Tenders 
54: With Anti-Pollution Equip(Vessels with anti-pollution facilities or 
equipment) 
55: Law Enforcement Vessels 
58: Medical Transports 
59: Resolution No18:MOB-83(Ships according to Resolution 
No18(Mob-83)) 
2X: WIG(Wing-in-Ground Effect Craft) 
4X: High Speed Craft   
6X: Passenger Ships 
7X: Cargo Ships 
8X: Tanker