The lower
decks may be used for carriage of cars while the upper may be used for the
carriage of bigger vehicles.
Transverse
strength is maintained by fitting deep closely spaced web frames in conjunction
with deep beams. These are usually fitted every 4th frame and about
3 m apart.
The lower
decks which are divided by watertight bulkheads have hydraulically operated
sliding bulkhead doors which are opened while working cargo in port.
The deck
thickness is increased to take the concentrated loads; a reduction in the
spacing of the longitudinals with an increase in size. A centre line row of
pillars is fitted.
Ramps are
fitted at the bow and at the stern to facilitate the loading and discharging of
vehicles. The separate decks are reached by fixed and sometimes hydraulically
operated foldable operated ramps.
A service
car is provided within the ship to transfer the lashing gear to the different
decks.
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