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When all else fails.
US icebreaker heads to Antarctic to help stuck ships
Comparable ships:
http://i.imgur.com/Tr8HRwv.png
MericaQuote:
According to Wikipedia, the ship has 3 propellers vs the 1 in the 2 stuck ships. Along with this, the ship has the ability to use 56MW of gas turbines to spin them. The other 2 ships combined are less than 20MW.
Naw, that Russian nuke 'breaker would OWN it.Quote:
Originally Posted by onebadmollafolla
Nice...
With such a sturdy hull and high power to back it up, the 13,000-ton (13,200-metric ton) Polar Star is able to ram her way through ice up to 21 feet (6.4 meters) thick and steam continuously through 6 feet (1.8 meters) of ice at 3 knots (5.6 kph).
Dunno...if i recall correctly, the nuke powered ones cant go thru warm water, or their reactors will overheat!Quote:
Originally Posted by anyonebutme
http://www.youtube.com/watch?v=Q6OHHGrVM3g
http://photos.marinetraffic.com/ais/...4828&size=1600
this russian ship is pretty impressive too. the older and smaller sister of the 50 let pobedy/50 Years of Victory:
Yamal (icebreaker) - Wikipedia, the free encyclopedia
The NS Yamal
The Yamal is equipped with a double hull. The outer hull is 48 mm thick where ice is met and has a polymer coating to reduce friction. There is water ballast between the inner and outer hulls which can be shifted in order to aid icebreaking. Icebreaking is also assisted by an air bubbling system which can deliver 24 m³/s of air from jets 9 m below the surface. The Yamal can break ice while making way either forwards or backwards.
Yamal is one of the Russian "Arctic" family of icebreakers, the most powerful icebreakers in the world. These ships must cruise in cold water to cool their reactors, so they cannot pass through the tropics to undertake voyages in the Southern hemisphere.
Displacement: 23,455 tons
Length: 150 m
2 x OK-900 171 MW nuclear reactors; 2 x steam turbines driving 6 generators, total 75,000 hp (55.3 MW)
Speed: 22 knots (41 km/h; 25 mph) (max)
19.5 knots (cruising)
Propulsion:Three propellers
for comparison
USCGC Polar Star (WAGB-10) - Wikipedia, the free encyclopedia
Polar Star The portion of the hull designed to break ice is 1-3/4 inches (45 mm) thick The hull strength is produced almost entirely from the massive internal support structure.
Polar Star has other unique engineering features designed to aid in icebreaking. At one point, an installed heeling system could rock the ship to prevent getting stuck in the ice. The system consisted of three pairs of connected tanks on opposite sides of the ship. Pumps transferred a tank's contents of 35,000 US gallons (133 m³) to an opposing tank in 50 seconds and generate 24,000 foot-tons (65 MN·m) of torque on the ship.[4] This system has since been removed due to maintenance issues.
Displacement: 13,623 long tons
Length: 399 ft (122 m)
Six Alco 16V-251F diesel engines (6 × 3,000 hp)
Three Pratt & Whitney FT-4A12 gas turbines (3 × 25,000 hp)
Speed: 18 knots
Propulsion:Three propellers
Ah yes, there it is!
interestingly, that video sys the nuke powered can handle 10 feet thick, but the link says ours can do 21 feet...Quote:
Originally Posted by mb7050
Yup, the USA's ship can break 6 meters all day. That is its rated ice ram breaking of ice. Must have some thick armor on that thing.Quote:
Originally Posted by wingnut
6 meter ram, not "all day". to get through 6m we have to go back and forth to break it up. I bet LP is rated for 8-10M ram. It's a BIIIG breaker.Quote:
Originally Posted by onebadmollafolla
Vid was showing 2m constant easy, says will crush 10 feet, but I'm thinking that's constant.
Arktika-class icebreaker - Wikipedia, the free encyclopedia
even the smallest of the russian arktika class nuclear-powered icebreakers can break 3 metres thick ice (10 feet) with an average speed of 3 knots
for comparison
USCGC Polar Star (WAGB-10) - Wikipedia, the free encyclopedia
polar star "can can steam continuously through 6 feet (1.8 m) of ice at 3 knots"
http://www.youtube.com/watch?v=OAJjFefQBjI
it's not about the thickness of the hull, it's about the shape. same with bridge pylons. they are designed to move the ice out of the path of the ship...not just crack it.
p.s. global warming? where is your god now?
of course the hull shape must be different on an icebreaker. an icebreaker must have a bow shaped like a spoon so it can use the weight of the ship to crush the ice. the rest of the hull has to be shaped in a way that it can go through ice efficiently. obviously it has to be a very strong structure. etc etc .....
sure its not all about the thickness of the hull or bilge pylons
just simply looking at the specs of these icebreakers its safe to say the USA has the most powerful non-nuclear icebreakers in the world, the polar class icebreakers they can break over 6 feet 1.8 m of ice continuously at 3 knots but the polar class is no match for the Russian nuclear arktika-class icebreakers. the Russian nuke icebreaker 50 LP for example , considered the strongest in the world, can break upwards of ten feet or 3 meters continuously at much higher speed. Its much longer and wider has more power and like twice as heavy.. vs polar star. These Russian arktika-class icebreakers also have all kinds of neat tricks to aid icebreaking like the air bubbling system that can help to lubricate the hull and help in the breakup of ice. and the water ballast system that can rock the ship...
http://2.bp.blogspot.com/_hTiQcJSGJC...ael%5B1%5D.jpgQuote:
Originally Posted by IPD