... can transform flexibly under pressure, with large contact area, small reaction and absorb large amount of energy.(4)when berthing ... 5460650111,5*3,06351105121,7*3,08501280132,0*3,514301940142,0*4,017602350152,2*4,523953265162,5*4,027503610172,5*5,031004560183,0*5,042406240193,0*6 ... of tons, hundreds of tons and thousands of tons to thirty thousand tons. Now China has over 4,000 small and large shipyards ...