Text by Baird Maritime, photo by Hin Lee Shipyard
China’s Hin Lee (Zhuhai) Shipyard has delivered a new pilot boat to the Hong Kong Pilots Association (HKPA).
The Camarc-designed Pilot 63 measures 17.3 by five metres and can reach speeds of up to 25 knots. The boat also possesses self-righting ability.
The newbuild will operate alongside sister vessel Pilot 62 in serving HKPA’s various clients.
Analysis of tracking data from Automatic Identification System broadcasts reveals vessel locations have been simulated for a number of ships, including military vessels. This false information could compromise vessel safety, decrease confidence in a crucial collision avoidance system and potentially spark international conflict.
Research on hydrodynamic interaction indicates that if the speed of the ship near a bank is too high, the rudder may be less able to cope with the forces induced and control will be lost. The Nautical Institute highlights this in its latest Mars Report, in which an LPG carrier hit a barge being towed by a tugboat as a result of hydrodynamic forces.
This video shows an introduction on the Spiral-Test-Manoeuvre and describes the procedure how to steer through this manoeuvre and measure the data needed. The results will be displayed in a characteristic diagram allowing to identify stable and unstable conditions and related, detailed information, e.g. spiral loop width and height, rudder angle of neutral effect. Samples of stable and unstable ship behaviour demonstrations will be shown by Fast Time Simulation using the SAMMON Planning tool.
