In many places, an assessment of potential effects of underwater explosions on marine life must be completed and preventive measures taken before blasting.
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They pressed home a depth charge attack when the submarine dived, and were rewarded at 04 : 10 with another great underwater explosion.
43.
The stern section of the torpedo bulkhead was also strengthened structurally to allow it to better contain the force of an underwater explosion.
44.
The scientists who examined the images noticed that underwater explosions took place when the plane's rockets fell short and fell into the ocean.
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Shallow underwater explosions are those where a crater formed at the water's surface is large in comparison with the depth of the explosion.
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In September, a scuba diver suffered from the bends when he was frightened by an underwater explosion and swam to the surface too quickly.
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The company says the system has not harmed the whales since testing began and will help protect whales from ship collisions and underwater explosions.
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A Norwegian seismic institute joined with Western governments Friday in saying that it had detected two underwater explosions in the area where the Kursk went down.
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The network of stations will be able to detect underground, atmospheric or underwater explosions more powerful than the equivalent of 1, 000 tons of conventional explosives.
50.
The flash of the exploding gunpowder provided the visual starting cue for the timepiece, and the underwater explosion sound striking a bell provided the finish cue.
