Description
Gray overall with nose band and white tail struts.
These two bombs were designed to fill the great need of the Japanese Navy for armor piercing bombs. Prior to the design of these two, the Japanese Navy had only one true armor piercing bomb, the type 99 No. 80 Mk 5, an adaptation of a large caliber artillery shell produced by turning the shell down to a streamlined shape and adding a tail section and a slightly larger explosive charge. Type 2 No. 80 Mk 5 and No. 150 Mk 5, although they were specifically designed as armor piercing bombs, differ only slightly from the earlier bomb. Type 2 No. 80 Mk 5 differs from type 99 No. 80 Mk 5 only in having a slightly larger explosive charge, and in having no recesses at the nose to hold a windshield in place. No. 150 Mk 5 is simply a larger version of type 2 No. 80 Mk 5. Both bombs of the No. 80 size use two B-2 (b) fuzes in the tail with the special Mk 5 gaine. No. 150 Mk 5 has two large fuzes of similar construction to the B-2 (b).
These bombs were never extensively produced, and neither type 2 No. 80 Mk 5 or No. 150 Mk 5 was ever found outside the Japanese homeland.
The data on these bombs is the result of incomplete investigation, and must not be considered as specific, accurate information.
The Mk 7 bomb was never more than an idea as far as the Japanese Navy was concerned. It was suggested and discussed by a meeting of designers in 1935, but no experiments were carried out because the idea was considered impractical and unnecessary.
Hazardous Components
Gaines - Special Mk 5
Filler - Type 91 explosive (6% load factor, or approx. 198 lbs, 90 kg)
See Also
General Information, Japanese Navy Bombs
Source(s)
