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Writer: collage Books
Date of book: 1962
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Description: eightvo - over 7¾" - 9¾" tall Copyright date 1962 first printing volumes within the slipcase blue and tan fabric over forums with gold and black lettering and layout at the entrance and at the backbone. Brown inside of covers back and front. gentle foxing the 1st few pages. Blue tent to the pinnacle web page edges no tears or bent pages nor any writing either volumes coated within the plastic disguise a few gentle put on to the toe of the books. Slipcase has put on alongside for edges. gentle soiling to the pinnacle slipcase, put on alongside the backbone corners. The existence tale and instructing of the best poet-Saint ever to seem within the heritage of Buddhism. Books textual content are vivid and fresh, tight binding, a great set of books. <
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E) In zigzagging large changes of course are disadvantageous as by making such the danger area is increased and the time within the danger zone increased. htm (34 of 35)7/19/2006 21:38:17 Analysis of the Advantage of Speed and Changes of Course in Avoiding Attack by Submarine - ONI Pub. No. 30 from the limiting position. For speed of ship 12, and submerged speed of submarine, these times are, minimum 10 minutes, maximum 20 minutes. (g) That the changes of course must be sufficiently large to cause a material error in the calculations of the submarine's commander.
Clear twilight offers very favorable light conditions for shots from the submerged condition. REASON: With a favorable background (with reference to clouds and moon) a submarine can approach on the surface to within 500 yards without being sighted. Under these conditions a ship would probably be visible 1,000 to 1,500 yards. In twilight attacks a submarine will endeavor to attack on the side away from the bright background. MEANS TO AVOID SUBMARINE: At night the course should be toward the moon.
No. 30 from the limiting position. For speed of ship 12, and submerged speed of submarine, these times are, minimum 10 minutes, maximum 20 minutes. (g) That the changes of course must be sufficiently large to cause a material error in the calculations of the submarine's commander. The angle required should not be less than 20° or over 40°, except that if changes are made, at intervals of time not greater than one-half the maximum time interval for the speed in use, 10° changes may be made. (h) That in view of the possibility that a submarine may be able to predict changes in courses and to determine the base course from a series of several observations when the zigzag is duplicated each hour, this practice should be abolished and the zigzag so constructed that no two successive hours are similar.