Specifications of the Botany Bay Lifeboat

  Photo by John Bell

Waveney Type

Self-righting

Length 13.5 m

Beam 3.86 m

Draught 1.2 m

Displacement 18.3 tonne

Maximum Speed > 15 knots

Cruising Speed 13 knots

Range at full speed 167 nautical miles

Length at waterline 12.2 m

Maximum safe towing speed   7.5 knot           Based on Length at waterline=40.02 ft    Lw = (40.02)^1/2 =6.326   

                                                                                            S = Hull design Speed & Max towing speed = Lw x 1.34 = 8.5 knots  

                                                                                           Maximum safe towing speed Ss = 0.9 x S  =  7.65 say 7.5 knot.

No of crew 5

Twin rudders - semi-balanced type

Cor-ten (high copper) steel hull

Aluminium decks and superstructure

   Elevation Drawing (Click drawing for detail)

Registered name and number - "Khami" 44 - 003

Previous station - RNLI Great Yarmouth and Gorleston, England

Built at Brookes Marine, Suffolk, England

Engine fuel Diesel

Main Fuel Tanks 2 off, each capacity 500 litre

Reserve Fuel Tank 340 litre

Seven watertight compartments

Fire detectors operate siren at 69 deg C

Fire extinguishers activate at 80 deg C

Anchor cable 92 m (50 fathoms)

Tow line 200 m

Skipper John Bell on the bridge of Botany Bay Lifeboat "Stratheden"

Location of Equipment by Graham Martin

Location of Bow items.(above)

Location of Stern items.(above)

ENGINES ( 2 Off )

Caterpillar Type 3208 marine engine

4 Stroke

Eight cylinder V configuration

157 kW at 2800 rpm (210 shaft horse power) each

Idle speed 650 rpm

Bore 114 mm (4.5 in)

Stroke 127 mm (5.0 in)

Displacement 10.4 litres

The engines are fitted with twin disc MG506 2.96:1 reverse reduction gearboxes

PIPING COLOUR CODE

Sea water inlet to engine and fire pump GREEN 995

Overboard discharges BLUE 1190

Fresh water YELLOW 109

Lubricating Oil LIGHT BROWN E160

Fuel Oil BROWN 063

Hydraulic oil ORANGE

Fire main discharge from Pump RED

Bilge suction and drain to bilge BLACK

ELECTRICAL SYSTEM

24 volts DC

There are eight gel batteries, each 6 volt with 260 ampere hours capacity.

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Click for more detail, CAT 3208 Engine .