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Causes of damage in 2 in 1 Cargo loading in a Containership - What is 2 in 1 loading ?
2 in 1 cargo hold means vessels under deck hold, which could accommodate 1 x 40 feet or
alternatively 2 x 20 feet in the same row at planners convenience. This gives very flexible option to
operators for stowage planning and has already become common practice among many shipping
Regrettably, however, there are cases often receive container damage report which is caused by misoperation in 2 in 1 cargo hold. Main reasons are categorized as follows:
1) Either or both of 2 x 20 feet are not properly stowed on base cones or fitting guide on hold bottom.
2) Stacking cones used for stacking 20 feet containers are not properly set or not removed when not
3) Base cones used for stowing 2 x 20 feet are not removed before stowing 1 x 40 feet in the same row resulting bent/ damage
Corner posts of a container. The corner post connect the upper corner casting of a container to the lower one and form one of the most stable parts of the container.
You are required to take photo of these situations on board when possible if you find it.
2 in 1 container operation in cargo hold
How to avoid wet damage by hold bilge
Loading of 20 feet containers
How to load 45 feet containers
How to avoid cargo damage in containership
Container handling more info pages:
- Definition of various containers in containership
The exterior dimensions of all containers conforming to ISO standards are 20 feet long x 8 feet wide x 8 feet 6 inches high or 9 feet 6 inches high for high cube containers.
Some of the most commonly used types are:Read more......
- Dimensions of various containers Containers are standardized cargo units. They are manufactured in a large variety of sizes and types, each designed to meet specific cargo and transportation requirements. Their length is usually 20 or 40 feet, although longer containers are used, principally in the US trade; these containers are 45, 48 and 53 feet long.
Containership advantages : In principle they are boxes or containers within a box. These boxes or containers have dimensions of 2.60 x 2.45 m with lengths of 6.10, 9.15 and 12.20 m. Containers are made in steel, aluminium or GRP. They are also of refrigerated design, thus advantageous for long voyages between Australia or New Zealand and the UK. Read more......
Containership cargo stowage and planning : When considering acceptability of a container cargo stowage plan, the following procedures / guidelines concerning cargo stowage shall be taken into account:
Stacking Weights Restrictions,
Lashing strength calculation,
Dangerous goods stowage and segregation,
Reefer Container Stowage ,
Out of Gauge Container Stowage , ....Read more......
DG cargo handling - IMDG code guideline :The general provisions for segregation between the various classes of dangerous goods are shown in "Segregation table" (IMDG Code Chapter 18.104.22.168). In addition to the general provisions, there may be a need to segregate a particular substance, material or article from other goods which could contribute to its hazard. Read more......
How to avoid irregular stowage of containers ? Stowage plan must be checked for any irregular stowage like those mentioned here :
Special Container Stowage,
Over-stow of Containers,
Dangerous Cargo Stowage & Segregation,
20 or 40 or 45 feet Compulsory Stowage Locations,
Hatch Cover Clearance (High cube containers Under Deck ),
Out of Gauge Container Stowage etc.Read more......
Measures against lashing failure : Lashing strength of deck cargo shall be ascertained by using the appropriate lashing strength calculation software where provided.
All resulting values for lashing strength must be within the tolerance limits prescribed by vessels classification society.Read more......
Reefer container stowage guideline : Reefer containers proposed for stowage must be accompanied by a reefer manifest. This reefer manifest should contain information regarding Container No., Stow position, Commodity, Temperature and Ventilation status. Read more......
Care of Reefer container during sea passage :Reefer containers require special care after they are loaded on board ship. These containers need to be supplied with power, monitored closely for proper function and repaired as required in case of malfunction. Read more......
Container ships procedures for securing for sea :All movable items on deck, inside accommodation and in E/R spaces, including under-deck passages and steering flat are firmly secured. Any unsecured items, in heavy weather, risk not only being damaged themselves, but could also pose a danger to vessel safety by violent contact with sensitive equipment or fittings.Read more......
Deployment and monitoring of moorings and safety of crew
:The Companyís Risk Assessment procedure shall be utilized to ensure that during all anticipated mooring arrangements and equipment use, the safety of crew is ensured. Read more......
Cargo securing procedure for container ship :Securing equipment will vary depending on the type of ship but is likely to include;
Twistlocks Lashing bars Turnbuckles Extension hooks Stacking cones (single and double) Twist Stackers Lashing D rings Shoes/Sockets for base twistlocks ...Read more......
Containership operation -Check items upon completion of repair works
: As the nature of container ship operation, itís tread to be lack of stability, due to Top Heavy Load, the Master shall always take special attention for her stability. Also the Master should remind factors to cause reducing stability more such as Alternating course with Big angle of Rudder, Towing by tugs at the scene of Berthing / Un-berthing, etc. Read more......
Containership operation -Cargo ventilation requirement : Cargo holds of container ships are fitted with two basic types of ventilation systems, namely natural and mechanical. Mechanical ventilation could be of either the supply or the exhaust type. Read more......
Containership operation -How to avoid wet damage ?
:Water entered into vessel cargo holds may cause wet damage to the cargo inside containers especially stowed on the bottom, unless the bilge water is drained in a proper and swift manner. Read more......
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prevention of pollution and many safety guideline. The procedures explained here are only indicative,
not exhaustive in nature and one must always be guided by practices of good seamanship.
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