In naval architecture an afterdeck or after deck, or sometimes the aftdeck, aft deck or a-deck, is the open deck area toward the stern or aft back part of a ship or boat. The afterdeck can be used for a number of different purposes. Not all ships have an afterdeck.

What type of ship carries deck cargoes?

CONTAINER SHIPS
CONTAINER SHIPS THAT CARRY ALL CARGO ON DECK. A ship designed in accordance with this concept would carry all its cargo on deck and would be the ultimate in “open ship” design. Its features would include: (i) The L/B ratio would be considerably lower than that of a conventional container ship.

Do container ships have decks?

Container ships are usually equipped with no hatches. That is, the ship has no continuous main deck running full breadth all along the ship. The only decks are within the double hull, which are more like stringers running full length, and provide passage way along the length of the ship.

What is Open deck?

An open deck, as the name suggests, is pretty much fully open between the cylinders and the engine block walls. Open deck designs have the coolant channel cast into the top of the deck. This configuration is found in pretty much all cast-iron blocks and some high-performance aluminum blocks.

What are the different types of decks?

Five Different Types of Decks

  • Wraparound Deck. A wraparound deck is like an old-fashioned wraparound porch.
  • Multi-Tier Deck. A multi-tier deck, or two-story deck, is the perfect choice if you have a large property, or if your property changes in elevation.
  • Attached Deck.
  • Detached Deck.
  • Rooftop/Over Garage Deck.

What is a Ro Ro cargo ship?

RoRo is short for ‘Roll-on, Roll-off’, which describes how products are loaded and discharged from a vessel. RoRo allows your products to roll on and off the vessel, as opposed to being lifted onboard using cranes. Self-propelled products, such as cars and tractors, roll on and off the vessel on their own wheels.

What cargo vessel carries various cargo?

Container ships
Container ships (sometimes spelled containerships) are cargo ships that carry all of their load in truck-size intermodal containers, in a technique called containerization. They are a common means of commercial intermodal freight transport and now carry most seagoing non-bulk cargo.

Why is segregation of cargoes done?

The purpose of separation of cargoes is to prevent either: Different cargoes OR. Different parcels of the same cargo…from being over-carried (inadvertently left in the ship’s hold).

How thick is the hull of a container ship?

Modern commercial ship hulls continue to be built with 14- to 19-millimeter-thick (0.5- to 0.75-inch) plate. Carbon steel is low-cost and easy to repair. These materials normally are specified American Bureau of Shipping grade A, although sometimes grades B and H are used.

What’s the difference between a closed deck and open deck?

In an open deck engine the cylinders are left unsupported and stand alone from the block itself, this is great for cooling but not strength. Finally, a closed deck engine has metal support all around the cylinder walls near the head. This gives closed deck engines the ability to handle big power and last much longer.

What is deck cargo on a ship?

If a vessel is carrying timber on the exposed decks it is considered that the deck cargo affords additional buoyancy and a greater degree of protection against the sea.

What are the characteristics of a ship with an attached dock?

– Dock ships are characterized by the full-length sidewalls protecting the cargo area. The cargo can be loaded by float-in/float-out by submersing the ship until the dock deck is under water, lift-on/lift-off, using cranes, roll-on/roll-off over the ship stern ramp.

What are the different types of cargo ships?

Specialized ships capable of transporting non-standardized heavy cargoes. They can be subdivided into four main categories: project cargo ships, open deck cargo ships, dock ships, and semi-submersible ships. As most heavy lift cargoes are unique, the management of those require very careful planning and coordination to the smallest detail.

What is the buoyancy of the deck cargo?

The buoyancy of the deck cargo can be taken into account, assuming that the cargo can absorb a volume of water equal to 25% of its volume (see Chapter 11 for the notion of permeability).