Small craft - Hull construction and scantlings ISO-12215-7 Малые суда – Конструкция корпуса и размеры по ISO-12215-7

Издание на английском языке
The book sets out minimum standards and recommendations for calculating the strength and dimensions of the hulls of small vessels, based on current practice. It is intended as a tool for determining the necessary structural characteristics to ensure the watertightness and safety of the vessel when properly used and operated in accordance with good navigational practices. This book is not a design manual, but rather provides initial data on the mechanical properties of materials without regard to wear or operational complications. It is suitable for assessing the structures of vessels up to 24 meters in displacement, including pleasure craft, workboats, and yachts, taking into account responsible navigation and operation.

Content
Foreword
Introduction
1. Scope
2. Normative references
3. Terms and definitions
4. Symbols
5. Application of this document
5.1. Materials
5.2. Limitations
5.3. Overall procedure for the application of this document
6. Main dimensions, data and areas
6.1. Dimensions and data
6.1.1. General
6.1.2. Bottom deadrise of the hulls Bх and chine beam Bcx of planing multihulls
6.1.3. Wet deck bottom
6.1.4. Crossbeams
6.2. Areas
7. Dimensions and pressure for panels and stiffeners under local loads
7.1. General
7.2. Example of application on multihulls
7.2.1. Sections
7.2.2. Details on panel assessment and dimensions
7.2.3. The constant averaged pressure method
7.2.4. Other assessment and dimensioning methods
7.2.5. Panels acting as "natural" stiffeners
7.3. Other topics on panel or stiffener dimensions
8. Local pressure-adjusting factors
9. Local design pressures
9.1. General
9.2. Limits of areas
9.3. Tables defining the local design pressures for multihulls
9.4. Design pressure for trimaran floats PTRFx
9.4.1. Pressure reduction factors
9.4.2. Pressure
9.5. Design pressure on watertight bulkheads and integral tanks
10. Further treatment of structural elements subject to local loads
11. Assessment of multihulls rudders, appendages and their wells
12. Multihull global loads
12.1. General
12.2. Typical structural arrangements
12.3. Global load assessment
12.3.1. General
12.3.2. The simplified method
12.3.3. The enhanced method
12.4. Design stresses under global loads
12.5. Global load case GLC1: Diagonal load in quartering sea
12.6. Global load case GLC 2: Rig loads
12.7. Combination of diagonal load GLC 1 and rig load GLC 2 for sailing multihulls
12.8. Global load case GLC 3: Asymmetric broaching loads in sailing multihulls
12.9. Global load case GLC 4: Longitudinal broaching/pitchpoling
12.9.1. General
12.9.2. Full method of analysis of the buoyancy load when the craft pitchpoles
12.10. Global load case GLC 5: Longitudinal force on one hull
12.10.1. General
12.10.2. Longitudinal force
12.11. Global load case GLC 6: Bending of crossbeams connecting hulls for motor catamarans. . 37 13 Structural arrangement for supporting global loads
14. Multihulls used as commercial craft and workboats
15. Information to be included in the owner's manual
15.1. General
15.2. Respect of maximum loaded displacement
15.3. Operational guidance
15.4. Information to take care of sandwich plating
15.5. Information required by Annex J of ISO 12215-5:2019 - for commercial craft and workboat
Annex A. (informative) Application sheet of ISO 12215-7
Annex B. (informative) "Established practice" recommendations for global loads assessment using FEM methods and reporting
Annex C. (informative) "Established practice" details
Annex D. (informative) Technical background and example of torsional moment analysis with differential deflection of crossbeams
Bibliography