the HARTH_TM Technology ...

The state of the sea will seriously affect the performance of all conventional ships, unlike the performance of HARTH designed and built ships.  Accordingly, all conventional ships (prior-art) rate their cruising speeds in smooth water.  The Hydro Lance HARTH ship's speed is rated to and through 80% of the Sea-State rating of that vessel design. 

HARTH LOW Hull DRAG Vs. The Conventional ...

 COPYRIGHT 2008-1998, Hydro Lance Corporation, Inc., All Rights Reserved

HARTH WAVE FORCE AVERAGING ...

Above: HARTH Hulls Shown Averaging the Forces through a Quartering Sea

Above:  Beaufort 7 - Note the worse condition of a HARTH vessel on the left in a beam sea with the engines off.  Only a maximum roll of 5 Degrees is appreciated, while still having no pitch or heave of the vessel.  The shown is a heading or following sea is shown traveling 60 MPH; a most economic cruising speed.  For further amazement, try doing a time / speed vector analyses.  The unexpected is Invention.

'SO MUCH MORE HARTH TECHNOLOGY ...

Above:      HARTH Heavy-Lift Ships               HARTH Fast Luxury Sport Yachts       Retired Airliners Conversions to Fast Ferries

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 COPYRIGHT 2008-1998, Hydro Lance Corporation, Inc., All Rights Reserved