| dc.description.abstract | Sri Lanka is an Island nation and with its
geopolitical situation, safeguarding national interest
entrusted with the country’s naval force. Effective
surveillance and search in territorial waters become
paramount to deny such threats. United Nations Office for
Drugs and Crimes under its Global Maritime Crime
Programme in the South Asian region has indicated the
feasibility to fund a project, if the Navy is capable of
design and build the required boats. The authors being the
naval architects in the Navy conducted an empirical
feasibility study to understand and solve the critical
success parameters to design and build the required boat.
This study incorporates (a) to estimate the boat’s total
hull resistance at the specified maximum speed, (b) to
estimate the total propulsive power and select the
propulsion power package to achieve the maximum speed,
(c) to optimize the RHIB dimensional parameters, the
centre of weight to improve performance and stability,
and (d) to determine the fulfilment of intact stability
criteria of the design. The total hull resistance at light
running condition was 7.1 Kn. The Mercury diesel Bravo
sterndrive unit with model number 4.2 (nominal power
350hp @ 3800RPM) was selected as the most suited
power package for this application. The length overall
and the amidships beam were 7.5 meters and 3.0 meters
respectively. The boat is capable of a range of 55 NM, and
a maximum speed of 34 Knots. The intact stability fulfils
the IMO Intact Stability Code requirements. | en_US |
