to most rural communities – a situation common in
Africa as well as in other developing economies.
Air
Of all the various transportation modes, air
accounts for only about 1 percent of total inter-
national freight movement; yet it is the fastest-
growing mode and is becoming less confined to
expensive products. Air transport has the highest
absolute rate, but exporters have discovered that
there are many advantages associated with this
mode. First, air transport speeds up delivery, mini-
mizes the time the goods are in transit, and achieves
greater flexibility in delivery schedules. Second, it
delivers perishables in prime condition. Harris
Ranch uses a 747 jumbo jet to fly live cattle from
the USA to Japan.A premium price commanded by
high-quality beef in Japan makes it possible to use
air freight.
Third,it can respond rapidly to unpredictable and
urgent demand. For instance, quick replacement of
broken machinery, equipment, or a component part
may be made by air.Fourth, it reduces to a minimum
damage, packing, and insurance costs. Finally, it can
help control costly inventory and other hidden costs,
including warehousing, time in transit, inventory
carrying cost, inventory losses, and the paperwork
necessary to file claims for lost or damaged goods.
These costs will increase as the time in transit
increases.Furthermore,opportunity costs (e.g., lost
sales and customer dissatisfaction) also adversely
affect profit, especially in the long term.All of these
costs can be minimized with air transport.
Traditionally, the appropriateness of air freight
was determined solely by a value-to-weight equa-
tion, which dictated that air cargo should be con-
fined to high-value products. One reason for that
determination was that transport cost is a small pro-
portion of such products’ value.Another reason was
that the amount of capital tied up with these prod-
ucts while in transit is high and should be released
as soon as possible.
Recently, shippers have begun to shift their
attention to the freight rates–density effect, which
determines true costs rather than absolute costs of
each transportation mode.
7
Air freight rates are
usually quoted per unit of weight, and sea freight
rates are usually quoted per unit of weight and
volume (whichever yields more revenue for the
steamship). For example, assume the freight rates
are $350/ton by air and $60/ton and/or cubic ft by
sea.At first, it would appear that surface (sea) trans-
portation is a great deal cheaper, but for a product
that is 1 ton and 7 cubic ft, the cost of sea freight
($420) is actually higher than that of air freight
($350). Therefore, sea freight is very cheap when
goods are very dense (i.e., low volume per unit of
weight). However, as density declines (i.e., the
increase in bulk in relation to constant weight), the
charge for sea freight rises rapidly. Consequently, air
freight is quite competitive for such low-density
goods as ladies’ shoes, men’s shoes, computers,
color TV sets, refrigerators, and towels.
The dominant form of the international trans-
portation of merchandise has always been ocean
transport. Its main advantage is its low rate, though
the savings achieved for many products are not nec-
essarily greater than other transport modes on an
overall basis. This helps explain why, when all the
hidden costs related to ocean transportation are
considered, air transportation is growing at a very
rapid rate (see Figure 13.3).
Half a century ago, virtually all overseas trade
went by ship. The use of air freight for high-value,
time-sensitive products has jumped since then.The
air mode has made it possible to outsource high-
technology products (e.g., computers).A reduction
in transit time by one day can reduce a product’s
price by 0.8 percent. Based on over $800 billion of
manufactured imports per year, an extra day can add
$7 billion to the costs. Because an ocean shipment,
on average, takes twenty days, a shift from a twenty-
day ocean shipment to a one-day air shipment can
lower the price of a product by about 15 percent.
8
Water
Bulk shipping is important in international trade
because it is one of the most practical and efficient
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