Folding tweens are tweendecker vessels that their tweendeck can be folded/removed. Therefore, with the tween deck in lowered condition the vessel will be utilized as a general cargo ship while with the tween deck in lifted/folded condition, the vessel can be utilized like a bulk carrier. Folding tweens increase the functional versatility of the tweendeckers.
In case the vessel has folding tweens same should be shown in the capacity plan, however if not clear take an advice from the vessel’s master.
The number of holds/ hatches can be found in the Capacity Plan or the General Arrangement Plan.
Hatches/holds may be box-shaped (which is more usual in such type of ships) or hoppered. For more information about the type of hatches please refer to Chapter 4, section 3.1.M.
As mentioned in Chapter 4, section 3.2.C, the hatch dimensions can be found in the General Arrangement Plan of the vessel.
These are types of tweendeckers that their hatches are level with the flooring so that vehicles and fork-lift trucks can move over the floor freely.
Flush tweendeckers are shown in the vessel’s GA plan and/or the Capacity Plan.
As earlier explained the maximum strengths are important in order to estimate the maximum cargo which can be loaded in these areas.
The maximum strength of the tanktop, tweendeck, weatherdeck and hatchcovers can be find in the GA plan and the Capacity Plan.
These are removable wooden battens fitted across the inner edges of frames in a cargo hold to prevent contact between cargo and the shipside. They also provide flow of air between the cargo and the shipside, thus preventing the damages to the cargo by sweat.
The vessel’s Master will advise whether the vessel is fully cargo batten fitted or not.
In paragraphs 3.1.I and 3.1.P. we analyzed the CO2 fitted and the electrically ventilated cargo holds. Here should be mentioned again whether the vessel is fitted with anything of the two.
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