Mumbai: Three naval sailors were injured, including one who lost a leg, when a bailout bottle exploded aboard diving support ship INS Nireekshak. The mishap occurred around 40 nautical miles from Vizhinjam near Thiruvananthapuram in Kerala, while the ship was on way from Visakhapatnam in AP to Mumbai on April 16. The diving bailout bottle is a small 12-inch oxygen bottle carried by divers in their helmets for use if the primary oxygen supply fails. The blast occurred during the refilling of the bottle. IANS