General Characteristics
For a single bomb
- Calibre: 7 in (178 mm)
- Weight: 65 lb (29 kg)
- Shell Diameter : 7.2 in (183 mm)
- Shell Length: 3 ft 10.5 in (1,181 mm)
- Explosive charge: 30 lb (14 kg) TNT or 35 lb (16 kg) Torpex
- Range: about 250 yd (230 m)
- Sinking speed: 22 to 23.5 ft/s (6.7 to 7.2 m/s)
- Fuse: Contact, High Explosive
- Firing Order: Ripple in pairs, one every tenth of a second
- Reload Time: ~3 minutes
Read more about this topic: Hedgehog (weapon)
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