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The basic unit of insulation coefficient is the R SI, (1 m 2 ⋅K/W). 1 tog = 0.1 R SI.There is also a US clothing unit, the clo, equivalent to 0.155 R SI or 1.55 tog, described in ASTM D-1518.
The BL 15-inch Mark I succeeded the BL 13.5-inch Mk V naval gun. It was the first British 15-inch (380 mm) gun design and the most widely used and longest lasting of any British designs, and arguably the most successful heavy gun ever developed by the Royal Navy . [ 3 ]
The calibre was 13.5 inches (343 mm) and the barrels were 45 calibres long at 607.5 inches (15.43 m). The guns were greatly superior to the unrelated earlier 13.5-inch (30-calibre) Mk I to Mk IV guns used on the pre-dreadnought battleship Admiral, Trafalgar and Royal Sovereign classes completed between 1888 and 1896.
The gun was designed to match the new large guns of the French Amiral Baudin-class battleships. Development and manufacture occurred far slower than intended. [3] The first ships armed with the 13.5 in gun were four of the Admiral-class battleships: Anson, Camperdown, Howe and Rodney, which were laid down in 1882-83 and completed in 1888-89. [4]
A few manufacturers have marketed combined duvet sets consisting of one 4.5 tog and one 9.0 tog. The light-weight one is for summer and the medium one for spring and autumn; snapped together, 13.5 togs is designed for winter. Manufacturers may also offer up to 15 tog duvets.
The 15 cm TbtsK C/36 was a German medium-caliber naval gun deployed on Type 1936A (Mob) destroyers during the Second World War. It was designed because the Oberkommando der Marine (German Naval High Command) thought that the 12.7 cm (5.0 in) guns of the Type 1936 and 1936A destroyers would potentially be inferior to those of possible enemies.
As of May 2020, both the 13.5-inch and 15-inch models ship with a pre-installed trial of Microsoft Office 365, as well as a pre-installed 64-bit Windows 10 Home for all general customers. [9] It is a downgrade compared to the predecessor, which offered Windows 10 Professional to all consumers, business and enterprise customers.
Tank, Heavy, TOG II (1 prototype) Tank, Heavy Assault, A33 (Excelsior) (only prototypes, not mass-produced or accepted into service) Tank, Heavy Assault, Tortoise (A39) (6 prototypes – finished in late 1945 after end of war)