Page:The New International Encyclopædia 1st ed. v. 18.djvu/929

TACTICS. 815 TACTICS. of the fleet (see preceding pages). Point. One thirty-second of a circle or 11 "4 degrees. Rear. The direction opposite to the front, iipeed. Stand- ard or battle speed is that designated for battle or course of 90 degrees; a half turn is a change of 45 degrees. Var^. The leading unit of a forma- tion. Wheel. A movement in line in which the r 4 i I I t 41 6| FlO. 19. FORMINO COL- UMN OF IMVIBIONB FROM COIXMS. Int. ■ IHviMioim, col- umn ri^lit.' 2(1. 'Ves- sels, left turn.' vessels preserve their relative positions but the line of bearing is revolved. FlQ. 16. ' FRONT INTO LINE, LEFT OBLIQUE.' manoeuvres. Ftill s^peed is a designated speed greater than standard; half speed is a desig- nated speed less than standard; and slow speed is still less. Tactical diameter. The perpen- FlG. 17. ■ VESSELS, RIGHT TURN." The mantFUvre changes column to line in tills in- stance. jrst Position Fig. 20. 'SQUADRON, RIGHT WHEEL, FOUR POINTS.* Executed similarly for any given number of points. In performing evolutions there are two prin- cipal methods, by rectangular moi^ements and by J 8 7 11 I » .-^ ±u 2 1 u dicular distance between the course at the be- ginning of a turn of 180 degrees and the course after the completion of the turn. Transfer. ~' Dis- FlO. 18. ■ VESSELS, BIOHT TtTBN.' In this maniBuvre line is changed to column, tance gained to the right or left (i.e, toward the flank) in turning. Turn. A turn is a change of 14 lis II" l8 Fig. 21. forming line to the front by RECTANCrL.^R METHOD. let. 'Squadron, coluiim right.' 2d. 'Vea- Bels. left turn.' direct or ohlxque movements. Certain evolutions also admit of movement by isodrome and otiiers by conversio-n or wheel. The ease of movement