P****i
发帖数: 12972 | 1 潜艇造得太重了，多出70吨，是因为小数点点错了。不亏是拉美国家的祖宗。
http://o.canada.com/news/spain-builds-submarine-70-tons-too-heavy
HARTFORD, Conn. — A new, Spanish-designed submarine has a weighty problem:
The vessel is more than 70 tons too heavy, and officials fear if it goes out
to sea, it will not be able to surface.
And a former Spanish official says the problem can be traced to a miscalcula
tion — someone apparently put a decimal point in the wrong place.
“It was a fatal mistake,” said Rafael Bardaji, who until recently was dire
ctor of the Office of Strategic Assessment at Spain’s Defence Ministry.
The Isaac Peral, the first in a new class of diesel-electric submarines, was
nearly completed when engineers discovered the problem. A U.S. Navy contrac
tor in Connecticut, Electric Boat, has signed a deal to help the Spanish Def
ence Ministry find ways to slim down the 2,200-ton submarine.
The agreement with Groton, Conn.-based Electric Boat calls for Spain to pay
$14 million over three years for an assessment of the problem with the S-80
submarine program and the scope of the work that would be required to correc
t it, the Spanish Defence Ministry said in a statement to The Associated Pre
ss.
Bardaji, now a senior fellow with the Strategic Studies Group think-tank in
Madrid, said officials will review options provided by Electric Boat. But he
said the preference has been to extend the length of the submarine’s hull,
perhaps by 5 to 6 metres, to increase buoyancy.
Otherwise, the weight of the submarine would have to be reduced, and he said
the Spanish Navy would not want to compromise features such as the combat s
ystem or an air-independent propulsion system.
The Isaac Peral, named for a 19th century Spanish submarine designer, is one
of four vessels in the class that are in various stages of construction. Th
e country has invested about $2.7 billion in the program. The first was sche
duled to be delivered in 2015 but the Spanish state-owned shipbuilder, Navan
tia, has said the weight problems could cause delays of up to two years.
The 233-foot-long submarine will carry a crew of 32, along with eight specia
l forces troops, and weapons systems for surface and anti-submarine warfare.
The Defence Ministry said technical problems are normal for projects of this
scale.
Apparently somebody in the calculations made a mistake in the very begin
ning and nobody paid attention to review the calculations.
“The technology challenges that these programs face during development are
much more than simple calculations,” the ministry said. “All the major mil
itary programs, especially submarines, have experienced delays and often hav
e required the support of a technology partner.”
Bardaji said the problem was discovered in the second half of last year, and
Navantia told defence officials that somebody had apparently put a decimal
point in the wrong place.
“Apparently somebody in the calculations made a mistake in the very beginni
ng and nobody paid attention to review the calculations,” he said.
Electric Boat, the primary contractor for the U.S. Navy’s fleet of nuclear
submarines, accepted the contract through a foreign military sales agreement
between the American Navy and the Spanish Defence Ministry, the U.S. Naval
Sea Systems Command announced this week.
Electric Boat, a division of General Dynamic Corp., has helped other countri
es with their submarine programs.
It began assisting with development of the Astute-class nuclear attack subma
rine for the British Royal Navy in 2003, and it is working under another for
eign military sales agreement on Australia’s Collins class of submarines. |
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