The design of a surface launch and recovery fender for DSRV "Alvin"
O'Sullivan, James Francis
MetadataShow full item record
Surface recovery of small submersibles could be made safer for personnel and hardware with the installation on the submersible of an inflatable, pneumatic bumper which acts also as main surface buoyancy. Tne use of such a bumper in the recovery of DSRV ALVIN by her catamaran mother ship, LULU, is the subject of this study. It was determined, from first order analysis of the surge velocities of these two vessels in recovery position in a sea state 6, that any such bumper or combination of bumpers (i.e. bumper on LULU) would have to absorb 10,000 ft.-lbF., of energy. In order to protect the mechanical arm, keep the forces of collision at an acceptable level and retain present surface buoyancy, an increase in ascent and descent time must be tolerated since the uninflated vertical projected area of the forebody must increase. Large trim moments, due to the presence of the air bumper at the bow can be eliminated by use of a partially submerged bumper.
Submitted in partial fulfillment of the requirements of the degree of Ocean Engineer at the Massachusetts Institute of Technology and the Woods Hole Oceanographic Institution and Master of Science in Ocean Engineering at the Massachusetts Institute of Technology September, 1973
Showing items related by title, author, creator and subject.
Backus, Richard H.; Craddock, James E.; Haedrich, Richard L.; Shores, D. L.; Teal, John M.; Wing, A. S.; Mead, Giles W.; Clarke, William D. (Woods Hole Oceanographic Institution, 1968-10)A sound- scattering layer, composed of discrete hyperbolic echo-sequences and apparently restricted to the Slope Water region of the western North Atlantic, has been identified from the Deep Submergence Research Vehicle ...
Sharp, Arnold G.; Sullivan, James R. (Woods Hole Oceanographic Institution, 1976-09)The authors developed a pendulum inclinometer suitable for use with small deepsubmersibles or surface craft. The instrument uses a relatively short heavy pendulum and a viscous damping system for minimizing the effects ...
Hunt, Mary M.; Marquet, William M.; Moller, Donald A.; Peal, Kenneth R.; Smith, Woollcott K.; Spindel, Robert C. (Woods Hole Oceanographic Institution, 1974-12)This report describes a system for underwater acoustic navigation developed, and in use, at the Woods Hole Oceanographic Institution. It includes a brief discussion of the electronic components, operation, mathematical ...