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Chapter 2 . Setting Design Requirements

2.1 Stating objectives in broad terms ........................ 35
2.2 Dimensional constraints ............................. 36
2.3 Environmental conditions ............................ 37
2.4 Merchant ship requirements and transportation studies ............. 38
2.5 Requirements of service ships and offshore working vessels .......... 40
2.5.1 Tugs ................................... 40
2.5.2 Dredgers ................................ 40
2.5.3 Icebreakers ............................... 41
2.5.4 Research vessels - hydrographic, oceanographic and fishery ..... 42
2.5.5 Fishing vessels ............................. 42
2.5.6 Fish factory ships ............................ 42
2.5.7 Oil production vessels ......................... 42
2.5.8 Exploration/drilling rigs ........................ 43
2.5.9 Supply boats .............................. 43
2.5.10 Safety vessels .............................. 43
2.5.1 1 Oil storage and tanker loading facilities ................. 43
2.5.12 Oil production vessels ......................... 44
2.6 Staffrequirements for warships and naval auxiliary vessels .......... 44
2.6.1 Staff requirements - general ...................... 44
2.6.2 Frigates and corvettes .......................... 44
2.6.3 Naval auxiliary vessels - general ................... 45
2.6.4 Landing craft and logistic support ships ................. 46
2.6.5 Landing ship docks ........................... 46
2.6.7 Fuel and stores replenishment ships ................... 46
2.7 Advanced marine vehicles ............................ 46
2.8 The design spirals ................................ 48
2.9 The critical criteria ................................ 50
2.9.1 Ships for which weight is critical .................... 50
2.9.2 Ships for which volume, deck area, linear dimensions or stability
are critical ............................... 52
2.9.4 Ships for which speed andor seakeeping are critical .......... 53
2.9.5 Ships for which tonnage is critical .................... 53
2.9.6 Other critical criteria .......................... 53
2.10 Trade-offs between operating economy and first cost .............. 53

Chapter 3 . The Design Equations

3.1 The weight equations .............................. 55
3.1.1 Comments on and finding a solution to eq . (3.1) ............ 56
3.1.2 Choosing between the use of eqs . (3.2) or (3.3) ............. 57
3.1.3 Equation (3.3) and the deadweight displacement ratio ......... 57