What is dunnage material and its types?

Dunnage is the name for the materials used in holds and containers to protect goods and their packaging from moisture, contamination and mechanical damage. Dunnage may include plastic films, jute coverings, tarpaulins, wood (wooden dunnage), rice matting, nonwovens, liner bags or also inlets etc.

Why is it called dunnage?

Dunnage is inexpensive or waste material used to load and secure cargo during transportation; more loosely, it refers to miscellaneous baggage, brought along during travel. The term can also refer to low-priority cargo used to fill out transport capacity which would otherwise ship underweight.

What is a dunnage system?

Dunnage is the packaging material used to prevent any damage to the goods in the container or carrying a vehicle or ship’s hold. It helps keep the containers/cargo in place during transportation. Normally wooden blocks, boards, burlaps, and paper are used for such purposes.

What is empty dunnage?

Shippers use dunnage to fill empty spaces inside the shipping box to restrict items from moving within the box. Dunnage is also used to separate items in a package and prevent any form of collision. This helps to prevent physical damage that can arise as packages slide back and forth during the delivery process.

What is dirty dunnage?

[German version] Dunnage is the name for the materials used in holds and containers to protect goods and their packaging from moisture, contamination and mechanical damage. Dunnage may include plastic films, jute coverings, tarpaulins, wood (wooden dunnage), rice matting, nonwovens, liner bags or also inlets etc..

What is dunnage steel?

VMC Group Steel Dunnage Platforms are customized structural steel platforms that are unitized to support large equipment. Dunnage platforms are designed for intermediate support between the equipment and rooftop steel.

What kind of wood is dunnage?

The term “wood dunnage” refers to any wood product that is used as dunnage. This can look like anything from banding groove used to consolidate the top of an order, to the ISPM-15 compliant lumber used to brace international shipments.

What is the meaning of hygroscopic cargoes?

Hygroscopic cargo has natural water/moisture content. This type of cargo is mainly plant products, which absorb, retain, and release water within the cargo. This water leads to significant heating and spreading of moisture in the cargo and result in caking or spoiling or cargo.

Is a pallet considered dunnage?

Wood: Wood offers versatility when used as dunnage during shipping. Wood blocks may be placed between products to create barriers. Shippers also use wood pallets to lift products when using forklifts. Steel: One of the most expensive dunnage materials, steel is typically used for heavy high-end, high-value products.

Is dunnage wood treated?

Blocking Lumber & Dunnage

* The dunnage mark on lumber identifies wood as being heat-treated and debarked and in compliance with ISPM-15 standards for export shipments.

What is ship’s sweat?

Ship’s sweat – Ship’s sweat is condensation which forms on the internal ship’s steelwork. It occurs when the temperature of the ship’s steelwork is lower than the dew point of the air in the hold. Condensation will form on the deckhead and/or on the inside of the shell plating.

What is cargo ventilation?

Ventilation is the introduction of air from the external environment into and through a cargo space, and the exhausting of the in-hold air. Ventilation may be needed in order to ensure that there is a sufficient oxygen supply for safe personnel entry into the cargo space.

What is ship vent?

A dorade box (also called a dorade vent, collector box, or simply a “ventilator”) is a type of vent that permits the passage of air in and out of the cabin or engine room of a boat while keeping rain, spray, and sea wash out.

What is an enclosed space on a ship?

​Enclosed spaces are spaces that have limited openings for entry and exit, inadequate ventilation and are not designed for continuous worker occupancy. The atmosphere in any enclosed space may be oxygen-deficient or oxygen-enriched and/or contain flammable and/or toxic gases or vapours, thus presenting a risk to life.

What is bale capacity?

Bale capacity is the space available in a ship’s compartment where cargo is loaded in packaged form e.g. bales, bundles, bags, drums, boxes, etc.

What is the cargo that may liquefy?

Many common bulk cargoes, such as iron ore fines, nickel ore and various mineral concentrates, are examples of materials that may liquefy. If liquefaction occurs on board a vessel, the stability will be reduced due to the free surface effect and cargo shift, possibly resulting in capsizing of the vessel.

What is duct keel in ship?

Duct Keel. Duct keel is provided in double bottom hull ships and consists of solid plates welded into a box shape, forming an internal watertight passage running along the length of the ship, usually from collision bulkhead to forward engine room bulkhead.

What is the difference between cofferdam and void space?

As explained above, the cofferdam is a type of void or empty compartment; however, the terminology of “Void space” is used for another purpose on a seagoing vessel. A “Void space” is also a type of enclosed space and it is usually provided in the cargo area of the ship.

What is grain space?

The grainspace is the complete capacity of the ship’s cargo spaces (including hatchways), measured in cubic feet or cubic metres. The measurements are taken from the tank top or top of ceiling, where fitted, to the underside of the deck plating and to the outside of the ship’s frames.

What is peak tank in ship?

[′pēk ‚taŋk] (naval architecture) A tank which is at the bow or stern end of a ship and is low in the ship, usually kept empty and dry but sometimes used to carry potable water.

What is sheer strake in ship?

Definition of sheer strake

: the upper strake of shell plating at the main deck in a steel ship or the top line of planking in a wooden ship.