This model is based on the same hull design as the successful 1500 series. With a passenger capacity of 100, it offers comfortable, safe and economical marine transport operations.

A range of engine options provides the speed desired to match operational requirements. The first of this model is currently in service in Cambodia.

austhai 1650 WSI boat


Approx. Weight (LLC)


Beam (ft/meters)

19'9" /6.09

Length-Centerline (ft/meters)

53'4" /16.30

Person Capacity

up to 100

  • Technical Specs
  • Concept Designs
Parameter Symbol Units Value
maximum length LMAX m 10.88
length of hull LH m 10.08
length of waterline  LWL m 9.23
maximum beam BMAX m 3.31
beam of hull BH m 3.26
beam at waterline* BWL m 1.03
beam between centres of buoyancy BCB m 1.97
maximum depth DMAX m 2.15
midship depth DLWL/2 m 1.98
freeboard forward FF m 1.68
freeboard midship FM m 1.523
freeboard aft FA m 0.77
canoe body draught (lightship) TC m 0.47
minimum draught (lightship) TMIN m 0.47
maximum draught (loaded) TMAX m 0.75
headroom in saloon   m 2.00
air draught (at DWL) HA m 3.13
bridgedeck height (vertical clearance)   m 0.31
volume displacement VD m3 5.68
light craft mass (LCC) mLCC kg 4200
minimum operation condition mass (MOC) mMOC kg 4400
loaded craft mass (LDC) mLDC kg 7935
maximum load mMTL kg 3735
immersion (at DWL)   kg/cm 174
number of engines     2
recommended power     250…350
maximum speed, lightship   kts 42**
maximum speed, full load   kts 32**
recommended cruising speed   kts 26..30
fuel   L 2x450
water   L 1x200
crew/passengers   - 32
Coefficients and parameters      
block coefficient* CB - 0.44
midship section area coefficient* CM - 0.530
waterplane area coefficient* CWP - 0.614
prismatic coefficient* CP - 0.829
longitudinal center of buoyancy LCB/LWL - 0.428
length to displacement ratio* LWL/VD1/3 - 5.171
displacement to length ratio* DLR - 206.8
EU RCD category     B 'offshore'
* - for one hull only   ** - estimated speed
 All measurements according to ISO8666
 DWL corresponds to full load displacement (LDC)
The Austhai 1100 Divecat is CE Certified

Please contact us to discuss your specific fit out requirements for this boat and we will be happy to provide a detailed specification and quotation based on your requirements.