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battleship guns: quot16 inch gun amp turretquot 1955 us navy training film for iowa class battleships
Bookmarked 591 weeks ago more at http:quickfoundnetlinksmilitary_news_and_linkshtmlus navy training film mn-9321cpublic domain film from the us navy slightly cropped to remove uneven edges with the aspect ratio corrected and mild video noise reduction appliedthe soundtrack was also processed with volume normalization noise reduction clipping reduction andor equalization the resulting sound though not perfect is far less noisy than the originalhttp:creativecommonsorglicensesby-sa30http:enwikipediaorgwiki16_inch_406_mm50_caliber_mark_7_naval_gunthe 16quot50 caliber mark 7 -- united states naval gun is the main armament of the iowa-class battleshipsthese guns were 66 feet 20 m long50 times their 16-inch 406 mm bore or 50 calibers from breechface to muzzle each gun weighed about 239000 pounds 108000 kg without the breech or 267900 pounds 121517 kg with the breech1 they fired projectiles weighing from 1900 to 2700 pounds 850 to 1200 kg at a maximum speed of 2690 feet per second 820 ms with a range of up to 24 miles 39 km at maximum range the projectile spent almost 1 minutes in flight each turret required a crew of 94 men to operate the turrets themselves cost us14 million each to which the cost of the guns had to be addedthe turrets were quotthree-gunquot not quottriplequot because each barrel could be elevated and fired independently the ships could fire any combination of their guns including a broadside of all nine considering the large mass of the ship compared to the mass of the projectiles the ships barely moved sideways at all even when a full broadside was fired with the damping effect of the water around the hull it seems that the pressure wave generated by the gunfire was felt much more than the very slight change in lateral velocitythe guns could be elevated from 5 degrees to 45 degrees moving at up to 12 degrees per second the turrets could rotate about 300 degrees at about 4 degrees per second and could even be fired back beyond the beam which is sometimes called quotover the shoulderquot within each turret a red stripe on the wall of the turret just inches from the railing marked the boundary of the gun039s recoil providing the crew of each gun turret with a visual reference for the minimum safe distance rangecomplementing the 16quot50 caliber mark 7 gun was a fire control computer in this case the ford instrument company mark 8 range keeper this analog computer was used to direct the fire from the battleship039s big guns taking into account several factors such as the speed of the targeted ship the time it takes for a projectile to travel and air resistance to the shells fired at a target at the time the montana class was set to begin construction the rangekeepers had gained the ability to use radar data to help target enemy ships and land-based targets the results of this advance were telling: the rangekeeper was able to track and fire at targets at a greater range and with increased accuracy this gave the us navy a major advantage in world war ii as the japanese did not develop radar or automated fire control to the level of the us navythe mark 7 gun was originally intended to fire the relatively light 2240-pound 1020 kg mark 5 armor-piercing shell however the shell-handling system for these guns was redesigned to use the quotsuper-heavyquot 2700-pound 1200 kg apc armor piercing capped mark 8 shell before any of the iowa-class battleships were laid down the large caliber guns were designed to fire two different 16 in 406 mm shells: an armor piercing round for anti-ship and anti-structure work and a high explosive round designed for use against unarmored targets and shore bombardmentthe propellant consists of small cylindrical grains of smokeless powder with an extremely high burning rate a maximum charge consists of six silk bags each filled with 110 pounds of propellant |
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occupy north pole
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game of thrones season 2 trailer: quotprice for our sinsquot
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discover living in asian mm2h 2nd home and celebrating visit malaysiatruly asia year 2014
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navratri special day 8 jai ambe gauri - ambe mata ki aarti bhajan color sky blue maa mahagauri
Bookmarked 379 weeks ago navratri special day 8 jai ambe gauri - ambe mata ki aarti bhajan color sky blue mahagaurisubscribe and stay updated for more durga maa mantras amp bhajans http:googlj8k2nglad you found our videos on youtube if you are new to our channel a big virtual hug to you welcome to the quotspiritual mantraquot familyhit 039like039 amp 039subscribe039 and show us your support :post your comments below and share our videos with your friends spread the love :origin - according to hindu mythologies the goddess shailputri at the age of sixteen was extremely beautiful and was blessed with fair complexion due to her extreme fair complexion she was known as goddess mahagauri navratri worship - goddess mahagauri is worshipped on the eighth day of navratri governing planet - it is believed that the planet rahu is governed by goddess mahagauri iconography - the mount of goddess mahagauri as well as goddes |
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apple refurbished imac computers
Bookmarked 402 weeks ago our website: https:wwwaffordablemaccouka slightly used sometimes never used at all apple refurbished imac computers that have been tested and certified by the apple have a generous price discount it comes with all accessories cables and manuals and with warranty as the new counterparts every certified apple refurbished imac computers sold by apple includes a keyboard mighty mouse power adapter and cord install and restore dvds and manualsmy profile: http:wwwmyvidstercomprofilerefurbishedimacmore links: https:www4sharedcomurfvc6_utaffordablemacukhtmlhttps:twittercomrefurbishedimachttps:plusgooglecomu0102604785604207482734 |
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apple refurbished imac laptop
Bookmarked 402 weeks ago our website: https:wwwaffordablemaccoukthe biggest benefit of purchasing an apple refurbished imac laptop is that you save more money than buying the same one brand new when you purchase a refurbished product from apple039s online store they restore the product to their standards the option of buying apple refurbished imac laptop is very beneficial because they come with quite cheap prices and maintains the quality of standardmy profile: http:wwwmyvidstercomprofilerefurbishedimacmore links: https:www4sharedcomurfvc6_utaffordablemacukhtmlhttps:twittercomrefurbishedimachttps:plusgooglecomu0102604785604207482734 |
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apple refurbished imac sale
Bookmarked 402 weeks ago our website: https:wwwaffordablemaccoukapple offers used apple macbook for sale refurbished apple macbook is affordable and maintains its quality as apple restored it the macbook is targeted at consumer and education fields the biggest advantage of macbooks is that they are more durable when installed with top hardware and are very slim and compact apple has a variety of used apple macbook for sale which is cheapermy profile: http:wwwmyvidstercomprofilerefurbishedimacmore links: http:followuscomrefurbishedimachttps:twittercomrefurbishedimachttps:plusgooglecomu0102604785604207482734 |
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best place to buy used apple macs
Bookmarked 402 weeks ago our website: https:wwwaffordablemaccoukapple refurbished macbook pro is a powerful mobile computer purchasing apple refurbished macbook pro is something that many apple enthusiasts seek apple puts them through a stringent refurbishment process where it inspects tests restores and repackages these products they also carry the same 1 year limited warranty as the new products havemy profile: http:wwwmyvidstercomprofilerefurbishedimacmore links: http:followuscomrefurbishedimachttps:twittercomrefurbishedimachttps:plusgooglecomu0102604785604207482734 |
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bambi love sbbws finished the job point-of-view blowing off
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91 the strongest pile driver battle 178 long-legged yoga instructor climaxing 6 times in a row until he collapsed
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