Beta Marine

Beta Marine

Sailboat Specifications

Hull Type: Lifting Keel
Rigging Type: Fractional Sloop
LOA: 30.67 ft
LWL: 29.17 ft
Beam: 10.17 ft
Displacement: 3,300.00 lb
Ballast: 1,980.00 lb
Max Draft: 8.00 ft
Min Draft: 2.00 ft
Construction: carbon/kevlar with foam core
Ballast Type: Lead
First Built: 1998
Builder: Stirling Boats
Designer: Steve Thompson

KLSC Leaderboard

KLSC Leaderboard

Auxiliary Power/Tanks (orig. equip.)

Make: OB in retractable pod

Sailboat Calculations

Bal. / Displ.: 60.00
Disp: / Len: 59.35
Comfort Ratio: 7.84
Capsize Screening Formula: 2.74
Hull Speed: 7.24 kn
Pounds/Inch Immersion: 1,059.99 pounds/inch

calculation mobile

2 nd ad half width

3rd ad full width

Sailboat Links

Designers: Steve Thompson
Download Boat Record:


The THOMPSON 30 was designed to compete in the 30 ft sport boat division in the Australia. Trailerable and easily launched via a crane or ramp.
Retractable keel and rudder.
The first boat sent to the US for Chris Bouzaid was a race winner.
Asymmetric spinnakers with articulating and retracting pole.
Hull and decks – Carbon/ Kevlar foam core
Keel and rudder – Carbon fibre construction for both keel & rudder, with lead bulb
Spars – Carbon fiber mast with aluminum boom.