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H.A.R.T.H. GRAPH: DRAG REDUCTION

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INDUSTRY ACCEPTED DRAG REDUCTION of TRADITIONAL CALCULATIONS ...

Note: The above Hydro Lance vessel hull profile and vessel geometry was altered to reasonably compare with the calm-water speed maximums of a subject wave-piercing Catamaran vessel hulls - for the ease of a comparative understanding.  HARTH hulls surface-wetted drag reduction system is not fully grown to all hull surfaces until capable higher cruising speeds (80+ Knots) are reached.  At such speed, overall hull drag reduction approaches 83%   leading to upwards of seven times the fuel economies per passenger or ton mile.  Above and below calculations were confirmed by an outside, nationally recognized, Naval Architectural and Engineering corporation.

 

WAVE HEIGHT AFFECTS SHIP SPEEDS ...

When plotting speed vs. drag, the additional 'real world' factor of wave height becomes a serious consideration.  While this graph does not reflect all factors of wave height, all conventional (prior-art) vessel designs, except  the Hydro Lance HARTH technology, will forcibly meet with significantly reduced speeds as the Sea State (wind speed and wave heights), rise with adverse weather conditions.   

All ships on the ocean today are subject to the rise and fall of all ocean contours (up, over and down the other side), then tunnel slamming or bow crashing into the next wave of elevated sea states.  These conditions lead to serious safety and hull stress issues.  Accordingly, these conventional ships, perhaps rated at a 12-40 Knot cruising speeds, must now slow down to perhaps 6 or 8 Knots.  You may note that all of today's, more conventional ships, are always - and only - speed rated in calm waters.  Hydro Lance rates the cruising speed for HARTH vessels in and through the ships elevated sea states; very different from the conventional.  For more information, See:    

HARTH-How Does HARTH Work?  and   Old Ways - Not Always Best  

 

SEA-STATE GRAPHS

WAVE, DRAG & CONTOUR GRAPHS

 

'So Much More ...

HL6 INTERCEPTOR ...  HARTH Ocean-Liner Ship

 

    How Fast?  Really Fast!                 Hydro Lance 80 Knot Blue-Water Ocean-Liner

 

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