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 2012-1998, Hydro Lance Corporation, Inc., All Rights Reserved

Comparing HARTH Performance with a Wave-Piercing CAT ...

HARTH WAVE FORCE AVERAGING ...

Above: HARTH Hulls Shown Averaging the wave forces through a Quartering-Sea to approximately zero

Above:  Beaufort 7 Scale - Wind Speed 28-33 Knots
Note the worse condition for a HARTH vessel (the left side of the image) 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.  Also 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.

Modern 2006 Revised Force Beaufort Scales - Link

MORE HARTH TECHNOLOGY ...

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

Additional Information ...

Pictures, underlined phrases above - and page links below provide links to additional and relative information .

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 COPYRIGHT 201121998, Hydro Lance Corporation, Inc., All Rights Reserved