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The harbortransport volume for 1973 is as shown in Table
II - (lIl) - 2 Against the 15.8% increase over the preceding year in the
loading and unloading volume within ships which is the core of harbor-transport,
the transport volume by barges remained at 2.8% increase. This is because the
cargo-working form centered around conventional barges has structurally changed
due to mass commissioning into service of highly rationalized vessels such as
container ships and tankers, increase of cargo-working via quays by progress
of harbor improvement, etc., despite the fact that there was quite an increase
in the imported cargo volume.
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