From Bruce Mullinax, Great Falls, Virginia, US
You report the discovery of 5000 to 10,000 underwater mountains (23 March, p 8). Just think of all the submarines carrying nuclear weapons that were cruising the oceans using incorrect charts…
The editor writes:
• An issue in oceanography is the amount of research kept secret to conceal the capabilities of such submarines. We don't know whether they can operate at the depths of the seamounts' peaks.
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