27-11-2003, 03:14
:arrow: Dimensions
L: Length on Summer Load Line
LOA: measured from the extreme parts of the vessel fwd and aft excluding bow fixtures (like the mermaids that used to be on the front of galleons)
LBP: Length Beetween Perpindiculars, measured from the sternpost to where the Designed Waterline meets the most fwd part of the vessel.
B: Breadth (refered to as Beam in Slang) widest part of the ship
Maximum Breadth: B x (width of shell plating x 2)
Freeboard: volume of the intact portion of the hull above the waterline (constantly changing).
Draft: Measured from the bottom of the Keel to the Waterline. It is always changing so it should not be included in your vessels specs.
Designers Draft: Draft ship is supposed to sit at when it is designed. This never changes.
Flare: V shaped Curvature in ships design to keep water off deck (Think the front of an Aircraft Carrier).
:arrow: Steering Features
Flanking Rudders: Rudders are fwd and aft of the propellor allowing vessel to steer just as easilly when going astern as it would going fwd.
Bow Thruster: Allows a ship to eliminate the Tug on the bow when docking and in some cases dock without tug assistance at all. Only effective when travelling at speeds of <5 knots.
Outboard Turning Screw Ships: Allows a vessel increased manueverability over single screw and Inboard turning screw ships.
Inboard Turning Screw Ships: Vessel sacrifices manueverability for increased thrust and speed. U.S. Navy Ocean-going Tugs utililize this practice.
Bulbous Bow: Circular structure protruding from the bottom of the bow to push water away from the hull decreasing drag. It is the shape of a modern day Nuclear Submarine and uses the same shape design principales.
:arrow: Rudders
Unbalanced: stress on rudder stock and steering gear
Balanced: blade extends fwd of the stock balancing out stress. Not all ships have enough room to fit a fully balanced rudder.
Semi-Balanced: area fwd of stock too small for the FULL effect.
:arrow: Ice Classifications
(1*) Extreme Ice: Very few ships acheive this classification. The only ships in service today that have this classification are Ice Breakers and U.S. Coast Guard Cutters.
(1) Severe Ice: Ships who need to operate in heavy ice areas have this classification. Ships in this catergory include Oliver Hazard Perry Class Frigates, NOAA Research Vessels, and some of the smaller Coast Guard Vessels.
(2) Intermediate Ice: Pretty much all Navy Vessels and Merchant vessels who operate in the North Atlantic are in this category.
(3) Light Ice: Most other large vessels who do not operate in the North Atlantic are in this category and a very small ratio of luxury yachts.
:arrow: Types of ships
Aircraft Carrier: transports aircraft to the theater in which they are needed, Provides a mobile landing strip and repair/refuel/re-arm facilities
Battleship: Carries multiple large artillery batteries.
Cruiser: Cruise Missle Strikes, Primary Anti-Air Defense.
Destroyer: Anti-Submarine warfare, carrier escort.
Frigate: Convoy escort, Inexpensive naval combat vessel
Break Bulk Freightor
Pros: Does not need any port facilities so it can use any port in the world including those in underdeveloped 3rd world countries.
Cons: Long time spent in port unloading cargo.
Container Ship
Pros: Reduced Cargo Handling Time
Reduced Cargo Handling Man-power
Allows for Intermodal Transportation
Less Prone to damage of goods
Less subject to Pilferage
Containers on Weather Deck increase cargo carrying capacity
Cons: Cannot handle all types of cargo
Tug Boat
Pros: Low initial cost.
Low manning requirements.
Low maintnence cost.
Dual ability to dock other vessels and transport barges
Ability to just untie barge and leave to get another allows for least amount of port time of any ship.
Cons: Inability to transport large amounts of cargo at once.
Some of the Smaller Tugs cannot operate in heavy seas.
Port Neptune Shipyard (http://www.nationstates.net/forum/viewtopic.php?t=86807&highlight=)
U.S.K. Naval Storefront (http://www.nationstates.net/forum/viewtopic.php?t=78356)
Barge Carrier
Pros: Has the least amount of Port time of any ship other than a Tug Boat and it can handle any type of cargo.
Ro/Ro
Pros: Faster Cargo Handling Rates than a Break Bulk.
Cons: Large amount of space wasted by stowing truck chasis.
Tanker
Pros: transports massive quantities economically.
Cons: Few ports are deep enough to accomidate them.
Huge amount of liability because spills pollute large areas.
Few Dry Docking Facilities are able to accomidate them.
L: Length on Summer Load Line
LOA: measured from the extreme parts of the vessel fwd and aft excluding bow fixtures (like the mermaids that used to be on the front of galleons)
LBP: Length Beetween Perpindiculars, measured from the sternpost to where the Designed Waterline meets the most fwd part of the vessel.
B: Breadth (refered to as Beam in Slang) widest part of the ship
Maximum Breadth: B x (width of shell plating x 2)
Freeboard: volume of the intact portion of the hull above the waterline (constantly changing).
Draft: Measured from the bottom of the Keel to the Waterline. It is always changing so it should not be included in your vessels specs.
Designers Draft: Draft ship is supposed to sit at when it is designed. This never changes.
Flare: V shaped Curvature in ships design to keep water off deck (Think the front of an Aircraft Carrier).
:arrow: Steering Features
Flanking Rudders: Rudders are fwd and aft of the propellor allowing vessel to steer just as easilly when going astern as it would going fwd.
Bow Thruster: Allows a ship to eliminate the Tug on the bow when docking and in some cases dock without tug assistance at all. Only effective when travelling at speeds of <5 knots.
Outboard Turning Screw Ships: Allows a vessel increased manueverability over single screw and Inboard turning screw ships.
Inboard Turning Screw Ships: Vessel sacrifices manueverability for increased thrust and speed. U.S. Navy Ocean-going Tugs utililize this practice.
Bulbous Bow: Circular structure protruding from the bottom of the bow to push water away from the hull decreasing drag. It is the shape of a modern day Nuclear Submarine and uses the same shape design principales.
:arrow: Rudders
Unbalanced: stress on rudder stock and steering gear
Balanced: blade extends fwd of the stock balancing out stress. Not all ships have enough room to fit a fully balanced rudder.
Semi-Balanced: area fwd of stock too small for the FULL effect.
:arrow: Ice Classifications
(1*) Extreme Ice: Very few ships acheive this classification. The only ships in service today that have this classification are Ice Breakers and U.S. Coast Guard Cutters.
(1) Severe Ice: Ships who need to operate in heavy ice areas have this classification. Ships in this catergory include Oliver Hazard Perry Class Frigates, NOAA Research Vessels, and some of the smaller Coast Guard Vessels.
(2) Intermediate Ice: Pretty much all Navy Vessels and Merchant vessels who operate in the North Atlantic are in this category.
(3) Light Ice: Most other large vessels who do not operate in the North Atlantic are in this category and a very small ratio of luxury yachts.
:arrow: Types of ships
Aircraft Carrier: transports aircraft to the theater in which they are needed, Provides a mobile landing strip and repair/refuel/re-arm facilities
Battleship: Carries multiple large artillery batteries.
Cruiser: Cruise Missle Strikes, Primary Anti-Air Defense.
Destroyer: Anti-Submarine warfare, carrier escort.
Frigate: Convoy escort, Inexpensive naval combat vessel
Break Bulk Freightor
Pros: Does not need any port facilities so it can use any port in the world including those in underdeveloped 3rd world countries.
Cons: Long time spent in port unloading cargo.
Container Ship
Pros: Reduced Cargo Handling Time
Reduced Cargo Handling Man-power
Allows for Intermodal Transportation
Less Prone to damage of goods
Less subject to Pilferage
Containers on Weather Deck increase cargo carrying capacity
Cons: Cannot handle all types of cargo
Tug Boat
Pros: Low initial cost.
Low manning requirements.
Low maintnence cost.
Dual ability to dock other vessels and transport barges
Ability to just untie barge and leave to get another allows for least amount of port time of any ship.
Cons: Inability to transport large amounts of cargo at once.
Some of the Smaller Tugs cannot operate in heavy seas.
Port Neptune Shipyard (http://www.nationstates.net/forum/viewtopic.php?t=86807&highlight=)
U.S.K. Naval Storefront (http://www.nationstates.net/forum/viewtopic.php?t=78356)
Barge Carrier
Pros: Has the least amount of Port time of any ship other than a Tug Boat and it can handle any type of cargo.
Ro/Ro
Pros: Faster Cargo Handling Rates than a Break Bulk.
Cons: Large amount of space wasted by stowing truck chasis.
Tanker
Pros: transports massive quantities economically.
Cons: Few ports are deep enough to accomidate them.
Huge amount of liability because spills pollute large areas.
Few Dry Docking Facilities are able to accomidate them.