Ship not shaken
■Comparison table of the shake
| Types of ship form | high speed | Fuel economy | Rough seas | Shaking | Price of ship | Loading capacity | Number of voyages |
| Normal ship (mono hull) | X | ◯ | ◯ | △ | ◎ | ◎ | △ |
| Hydrofoil | ◯ | X | X | △ | △ | X | ◯ |
| Catamaran | ◯ | X | △ | △ | △ | △ | ◯ |
| through hull ship (kurokiship) | ◎ | ◎ | ◎ | ◎ | ◯ | ◯ | ◎ |
■Ship not swinging, stable ship when stopping
【Ship not swinging, stable ship when stopping】
KurokiShip is a ship that will not shake. There is water on the bottom of the ship, this water holds the bottom of the ship and the bottom does not shake. If the lower part does not shake, both sides and the upper part tightly connected to the lower part will not shake. Even if the surface of the water sways with waves, it does not float above water, so the hull does not shake and the waves rush up on the floating floor like a wave that strikes the sand beach.
【Pitching, rolling】
Since the current ship floats on the water, when the water surface shakes with the wave, the waterline moves and the ship sways according to Archimedes’ principle in accordance with the change of buoyancy.
■SShip not shaken, stable ship when running
【Ship not shaken, stable ship when running】
【Ship not shaken, stable ship when running on raging wave】
KurokiShip does not shake even when sailing. Water is flowing over the waterway at the bottom of the ship, this water pushes down the ship and the boat runs. The waves pass by over the flowing water and the ship never shakes. There are no three big swings of pitching, rolling, yawing. There is no bending of a ship of hogging (convex) or sagging (concave). There is no danger such as punching, slamming or broaching.
【Hogging】
【Sagging】
【Punching, slamming】
The current ship floats on the water, so the ship sways back and forth (pitching) and right and left (rolling) according to the wave. In the open ocean, the ship is bent back and forth by hogging (convex) or sagging (concave) by a wave with a long wavelength. In the rough sea, the bow collides with the wave, and the ship trembles strongly by punching and slamming. There is a danger that the ship’s rudder does not work due to boring and rolling over.