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Improved nomographs for calculating visibility by swimmers (Natural light)
- Author(s): Duntley, Seibert Q
- et al.
U. S. Navy, Bureau of Ships. Project S P001 05 01. Contract NObs-72039, Task 5. Report No. 5-3. This report provides nomographic charts for calculating the limiting range at which swimmers can sight underwater objects illuminated by natural light.