THE practice of slow steaming as way to reduce a vessel's
fuel consumption has proven a good way to trim operating expenses to boost a
shipping line's bottom line and stay profitable in the current weak freight
market.
Speaking at Singapore's Nanyang Technological University,
economics professor Ma Shuo from Sweden's World Maritime University presented
numbers to back his theory that the prevalence of slow steaming was mostly
dictated by low freight rates.
To calculate the optimal speed, he applied the six
factors into a feasible model of a 8,000-TEU ship sailing between Shanghai and
Rotterdam with a distance of 12,000 miles and 100 per cent load factor.
Bunker was set US$650 per tonne, plus a ship cost of $100
million, containers worth $20 million, operating cost per day of $8,500, value
of cargo at $60,000 per TEU, annual interest rate at three per cent, emission
cost of $30 per tonne of fuel consumed and a freight rate of $800 per TEU.
The calculations showed that with rates at less than $600
per TEU, the optimal speed would be 17 knots, rising to 19 knots for a $800 per
TEU rate, 24 knots for $1,200 per TEU and 27 knots for $1,400 per TEU, meaning
that the optimal speed becomes higher in a firmer freight market.
"During the previous shipping boom, had anyone heard
of slow steaming?" asked Prof Ma.
"Shipping companies would be foolish to slow steam
back then when freight rates are high and it made sense to sail at the fastest
speed in order to achieve higher turnarounds for each vessel," he said.
Given a cyclical shipping market, many question whether
slow steaming, which makes economic sense in a bear market, is here to stay,
reported Seatrade Global.
Port captain Soren Retz Johansson at Denmark's Norden
Shipping with businesses in the dry cargo and tanker segments, made it clear:
"We are doing everything we can to slow steam."
In the container segment, Mr Johansson highlighted that
18,000 TEU containerships are designed specifically to slow steam, pointing to
a long term resolve by lines to employ this modus operandi.
Based on a recent market survey of 200 liner and tramp
companies, 75 per cent apply slow steaming to various extents, said Prof Ma.
"I consider slow steaming to be affected by an
interplay of six forces or factors. But basically the most important and
dominating factor is the freight rate," he said.
"This means that when freight rates are high, speed
has to be high."
Apart from the freight rate, the other five factors are
bunker cost, ship cost, cargo cost, interest rate and environmental cost, he
said.
Source : HKSG.
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