Compared with the classic deep-V hull theory-based boats, all K-TOUGH Hull based boats will ride with fundamentally different behaviors that will change landscape of today’s industrial capability for high speed boat operating safety, performance and comfort, detailing as follows:

1. Unlike the classic deep-V hull theory based boats that are rocking from portside to starboard and then again and again when riding at low/displacement speeds, the K-TOUGH Hull theory based boats can do low speed move extremely stable just like walking on land(video available as proof), securely extremely high level of comfort in low speed maneuvering for coming alongside quayside or leaving the harbor, which is of vital importance for pilot transit and the shifting of pilots between the pilot boat and commercial ship in adverse conditions;

2. Unlike the classic deep-V hull theory based boats that are highly lifting the forward hull section above water when transmitting the speeds from displacement speeds to planing speeds, the K-TOUGH Hull based boats are transmitting its riding mode from displacement speeds to planing speeds smoothly and gentle without significant bow up, because the unique hydrodynamic characteristics of the underwater section of our boats has been set to allow oncoming water to meet the dynamic forward waterline entry to evenly lift the whole boat along the hull length rather than simply hitting the forward hull section of the boat to cause a high water slope like what is found in the classic deep-V hull theory based boats;

3. Unlike the classic deep-V hull theory based boats that are riding with very exciting and unstable behaviors that get the dynamic forward waterline entry to be always changing and for most of the time to significantly move back to the midshio hull bottom and even the aft hull bottom to allow oncoming waves to directly hit the midship hull bottom to cause strong vertical acceleration to be imparted to both the hull structure and the crew onboard, the K-TOUGH Hull theory based boats can self lock their riding behaviors to sustain extremely smooth, soft and stable ride even over 60 knots and with nearly no speed loss even in open sea waves---The V-shaped bottom to meet waves in our boats at high speed has the deadrise angle to be approx. 60 deg. while the V-shaped bottom for competing boats to meet waves at high speeds only has the deadrise angle to be around 25-28 deg., which means our K-TOUGH Hull based boats can easily cut through waves to make the way ahead without effort, thus hull slamming has been fundamentally reduced to extremely low level, which is a very irreplaceable capability for a modern fast response pilot boat because real-world mission is always combined with tough weather;

4. Unlike the classic deep-V hull theory based boats that are maneuvering with extremely large heeling angle and high tendency of throw-away phenomenon and side skidding, the K-TOUGH Hull theory based boats can self stabilize themselves even when doing very high speed sharp turning, making safe tactics operation secured with confidence;

5. Unlike the classic deep-V hull theory based boats that have to face very wet deck in rough seas due to unstable vertical stability at the bow and problematic design in the run of topside geometry(no matter the bow is conventional raked bow with flared topsides or is radical slender wave-piercing bow), the K-TOUGH Hull theory based boats can ride fully dry even in sea state five to allow extremely safe deck working capability;

6. Unlike the classic deep-V hull theory based boats that are facing terrible heaving motion and pitching motion (heaving and pitching motions refer to the situation when the whole boat is to be frequently and dramatically lifted and then lowered, and the bow highly lifted with stern deeply down and then the stern highly up and the bow deeply down in waves) when carrying berthing and boarding operations alongside commercial ship, there is very little sign of heaving motion or pitching motion in rough seas for any of KINGTOUGH boats designed based on same K-TOUGH Hull platform;

7. Unlike the classic deep-V hull theory based boats that are very sensitive in speed and loading condition, there is very little impact to the speed of our K-TOUGH Hull theory based boats even at overloading condition due to the special bottom profile of our hull design.

To confirm above, we have carried out back-to-back sea trial comparison between this K-TOUGH Hull theory based 10.6m boat in patrol boat version with a classic deep-V hull theory based 20m fast patrol boat. Though this 20m boat is 5-6 times heavier and the construction cost is 4-5 times higher, the real-world rough sea handling capability is something to be second killed by the very small 10.6m boat with the hull length to be only 9m which only has approx. 1.4% of speed loss when operating in sea state five as recorded by GPS, which is something that has been far better than what the classic deep-V hull theory can reach.

To secure a truly hard-working boat in hard work, the vessel will be constructed just like the other many of our KINGTOUGH boats to anextremely high commercial standard with particular attention to minimising noise transference and vibration while enhancing structural rigidity and integrity, and offering best crew comfort and mission-capability.