Download - 2.1 Ship Types
Section 2.1
Ship Types
&
Hull Forms
Classification of Ship by Usage
• Merchant Ship
• Naval & Coast Guard Vessel
• Recreational Vessel
• Utility Tugs
• Research & Environmental Ship
• Ferries
Classification of Ship by Support Type
• Aerostatic Support - ACV (Air Cushion Vehicles) - SES (Captured Air Bubble)
• Hydrodynamic Support - Hydrofoil
- HYSWAS (HYdrodynamic Small Waterplane Area Ship) -Planning Hull
• Hydrostatic Support - Conventional Ship - Catamaran
- SWATH (Small Waterplane Area Twin Hull) - Deep Displacement
• Submarine - Submarine - AUV/ROV
2.2.1 Aerostatic Support
- Supported by cushion of air generated by a fan. - ACV (Air Cushion Vehicle)
hull material : rubber propeller : placed on the deck amphibious operation - SES (Surface Effect Ship)
side hull : rigid wall(steel or FRP) bow : skirt propulsion system : placed under the water water jet propulsion supercavitating propeller not amphibious operation
E
SES Ferry
NYC SES Fireboat
250’ SES Ferry
• Planning HullPlanning Hull - supported by the hydrodynamic pressure developed - supported by the hydrodynamic pressure developed under the hull at high speedunder the hull at high speed - V or flat type shape- V or flat type shape - commonly used in pleasure boat, patrol boat,- commonly used in pleasure boat, patrol boat, missile boat, racing boat missile boat, racing boat
2.2.2 Hydrodynamic Support
Destriero
• Hydrofoil ShipHydrofoil Ship - - supported by a hydrofoil, like wing on an aircraftsupported by a hydrofoil, like wing on an aircraft - fully submerged hydrofoil ship- fully submerged hydrofoil ship - surface piercing hydrofoil ship- surface piercing hydrofoil ship
2.2.2 Hydrodynamic Support
Hydrofoil Ferry
HYSWAS Quest
Hydroplane vessel
2.2.3 Hydrostatic Support
• Displacement ship - conventional type of ship - carries high payload - low speed • SWATH - small waterplane area twin hull (SWATH) - low wave-making resistance - excellent roll stability - large open deck - disadvantage : deep draft and cost• Catamaran/Trimaran - twin hull - other characteristics are similar to the SWATH• Submarine
SWATH vessel
SWATH vessel Seashadow
Tri-Hull combat concept vessel