Accession Number : AD0458460


Title :   A HYDRAULIC-PNEUMATIC FLOATING FENDER.


Descriptive Note : Final rept., Mar 63-May 64,


Corporate Author : NAVAL CIVIL ENGINEERING LAB PORT HUENEME CA


Personal Author(s) : Lee, T T


Report Date : 19 Feb 1965


Pagination or Media Count : 44


Abstract : Service tests of two 50-foot-long floating fenders (each a bulkhead fronted by two water-filled and two air-filled rubber bags) show that they reduce damage to piers, pier-fender systems, and ships, particularly in protected harbors with only moderate swell and wind. They are higher in initial cost than fenders designed for similar work ($77 per lineal foot of wharf in 1963), but for long-range operation may prove more economical, based on one servere berthing in 10 years. Loading forces and energy were calculated during a 14-month period from berthings of about 30 naval and merchant ships in Port Hueneme Harbor, California. Maintenance cost of the fenders was high. Modifications of this system are suggested, including shock absorbers called HYNEU, which employ an air-filled bag within a water-filled bag. Information is included which will aid engineers and designers in providing fenders that will absorb more energy than current systems. (Author)


Descriptors :   *PIERS , VIBRATION ISOLATORS , FLOATS , BULKHEADS , PNEUMATIC EQUIPMENT , HYDRAULIC EQUIPMENT , ENERGY , SHIPS , DAMAGE , FLOATING BODIES


Distribution Statement : APPROVED FOR PUBLIC RELEASE