DREDGES FOR AMPHIBIOUS OPERATION
Abstract
LANDING OPERATIONS ARE FREQUENTLY HAMPERED BY OFFSHORE SAND BARS OR CORAL REEFS WHICH BLOCK THE MOVEMENT OF LANDING CRAFT TO THE BEACH. THIS IS A STUDY OF THE FEASIBILITY OF USING A DREDGE, OR OTHER MEANS, TO CUT ACCESS SLOTS THROUGH THE BARS TO THE BEACH; AND TO CUT SLOTS IN THE BEACH AS SLIPS FOR THE LANDING CRAFT. BECAUSE OF LITTORAL CURRENTS,SURF CONDTIONS, TYPE OF BEACH MATERIAL, SIZE OF SAND BARS, AND THE LARGE NUMBER OF POSSIBLE COMBINATIONS OF CONDITIONS DUE TO THESE FACTORS, THE FEASIBILITY OF OPENING SLOTS THROUGH SAND BARS DEPENDS ON THE SITUATION AT THE LANDING SITE AT THE TIME OF THE OPERATION. A SET OF CURVES HAS BEEN PLOTTED WHICH SHOWS THE AMOUNT OF MATERIAL THAT HAS TO BE REMOVED PER FOOT OF SLOT AT VARIOUS DEPTHS FOR DIFFERENT CRAFT, AND THE TIME NECESSARY FOR VARIOUS SIZE DREDGES TO ACCOMPLISH THIS. SLOTES IN THE BEACH FOR LANDING SLIPS WERE FOUND TO BE IMPRACTICAL BECAUSE THE SURF MOVES LARGE VOLUMES OF MATERIAL WHICH RAPIDLY REFILLS THESLOTS WITH SAND.
Document Details
- Document Type
- Technical Report
- Publication Date
- Dec 28, 1959
- Accession Number
- AD0250607
Entities
People
- A.l. Scott
- O.p. Bak
Organizations
- Naval Facilities Engineering Service Center