RULES DET NORSKE VERITAS (DNV) = STRUCTURES = - Boat Design Net

Rules for High Speed, Light Craft and Naval Surface Craft, January 2011 Amended July 2011, see page 3Pt.3 Ch.1 Contents – Page 4CONTENTSSec. 1 Design Principles ................................................................................................................................ 5A. Documentation .............................................................................................................................................................. 5A 100 Plans and particulars ............................................................................................................................................. 5A 200 Information ........................................................................................................................................................... 5A 300 Strength calculations............................................................................................................................................. 5A 400 Certificates ............................................................................................................................................................ 5B. Subdivision and Arrangement ..................................................................................................................................... 6B 100 General.................................................................................................................................................................. 6B 200 Transverse watertight bulkheads........................................................................................................................... 6B 300 Position of collision bulkhead............................................................................................................................... 6B 400 Openings and closing appliances.......................................................................................................................... 6B 500 Cofferdams............................................................................................................................................................ 6B 600 Steering gear compartment ................................................................................................................................... 7C. Scantlings ....................................................................................................................................................................... 7C 100 General.................................................................................................................................................................. 7C 200 Loading conditions ............................................................................................................................................... 7C 300 Hull girder strength............................................................................................................................................... 7C 400 Resistance to slamming ........................................................................................................................................ 7C 500 Local vibrations .................................................................................................................................................... 7C 600 Miscellaneous strength requirements.................................................................................................................... 7D. Definitions ...................................................................................................................................................................... 7D 100 Symbols ................................................................................................................................................................ 7D 200 Structural terms..................................................................................................................................................... 8Sec. 2 Design Loads..................................................................................................................................... 10A. General......................................................................................................................................................................... 10A 100 Introduction......................................................................................................................................................... 10A 200 Definitions .......................................................................................................................................................... 10B. Accelerations................................................................................................................................................................ 11B 100 General................................................................................................................................................................ 11B 200 Design vertical acceleration................................................................................................................................ 12B 300 Horizontal accelerations...................................................................................................................................... 13C. Pressures and Forces .................................................................................................................................................. 14C 100 General................................................................................................................................................................ 14C 200 Slamming pressure on bottom ............................................................................................................................ 14C 300 Forebody side and bow impact pressure............................................................................................................. 16C 400 Slamming pressure on flat cross structures......................................................................................................... 17C 500 Sea pressure ........................................................................................................................................................ 18C 600 Liquids ................................................................................................................................................................ 19C 700 Dry cargo, stores and equipment ........................................................................................................................ 20C 800 Heavy units ......................................................................................................................................................... 20Sec. 3 Hull Girder Loads ............................................................................................................................ 21A. Longitudinal Bending, Shearing and Axial Loads................................................................................................... 21A 100 General................................................................................................................................................................ 21A 200 Crest landing ....................................................................................................................................................... 21A 300 Hollow landing ................................................................................................................................................... 22A 400 Hydrofoils ........................................................................................................................................................... 22A 500 Hogging and sagging bending moments............................................................................................................. 22A 600 Shear forces from longitudinal bending.............................................................................................................. 23A 700 Axial loads .......................................................................................................................................................... 23A 800 Combination of hull girder loads ........................................................................................................................ 23B. Twin Hull Loads.......................................................................................................................................................... 23B 100 General................................................................................................................................................................ 23B 200 Vertical bending moment and shear force .......................................................................................................... 24B 300 Pitch connecting moment.................................................................................................................................... 26B 400 Twin hull torsional moment................................................................................................................................ 26DET NORSKE VERITAS AS