CB1 is berthed at East Sea Rescue Berth whereas CB2 is berthed at West Sea Rescue Berth to provide rescue service to the Hong Kong International Airport.
These very expensive (approximately US$5.8 million) vessels are a new addition to the airport's search and rescue capabilities. It boasts a maximum speed of over 29 knots and rescue capacity for 600 persons. The Command Boat is also equipped with advanced features such as a helicopter winching platform, infra-red night vision system, Jason's cradles (water rescue ladders), underwater camera, and side-scan sonar. Its powerful 4,000 liters-per-minute fire-fighting system can spray up to 60 meters.