Applied naval architecture; with numerous detailed calculations and over 360 tables and diagrams

This historic book may have numerous typos and missing text. Purchasers can download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1920 Excerpt: ...speed may be given as follows:--o 3 rtvi Ess«» TM--8--06 99 „ „ =-08--06 9 „ „ =-8 "-6 a = o-f)-2-X= V V is full speed in knots. V---= is for moderate speeds, and cannot be even approximately vli applied to speeds where is greater than unity. VL The time in seconds which will elapse before a vessel comes to rest from full speed, and with engines reversed, may be found approximately from the equation--C (4) Time in seconds =, tan-1--V = full speed in feet per second. R = resistance in tons at this speed. Expressing the speed in knots, the resultant time in minutes, and simplifying the equation, then--AV C (5) Time in minutes =-00089= Xt An approximate formula for vessels of moderate speeds may be given as--V C (6) Time in minutes = 13-10--The distance a vessel will travel before reducing to any desired speed from full speed ahead may be approximated from the following equation, assuming engines reversed:--.,, 3AV 19V2 D (1) Distance in feet = logE-V = full speed in feet per second. v = desired speed in feet per second. E = resistance in tons at full speed. Making V in knots, and simplifying the equation, and eliminating the Napierian log, then---n n!v t.-1225AV2. 1-9V2 1) (2) Distance in feet = p log The distance travelled from full speed ahead, before vessel comes to rest, assuming engines reversed, may be approximated as follows:--3AV2 D (3) Distance in feet = Expressing speed in knots, and simplifying the equation, then--D (4) Distance in feet =-0397 For this condition an approximate formula may be stated as--D (5) Distance in ft. = 7 times the length of the ship This may be applied to vessels up to 600 ft. in length, but for lengths over that the resultant distance should be reduced 300 ft. for every excess of 100 f...