trol functions begin. In the case of both 

 ALVIN and DEEP QUEST, however, coordi- 

 nation is required between the operator and 

 support ship during both launch and re- 

 trieval. An explanation of submerged con- 

 trol, however, describes the same control 

 available on the surface. 



ALL OCEAN INDUSTRIES: 



The All Ocean Industries vehicle and the 

 K-250 series obtain all propulsion and ma- 

 neuverability from four V2-hp, 6 and 12 VDC 

 electric motors mounted in pairs port and 

 starboard amidships. A selector switch is 

 provided for each motor which can be set at 

 low, medium or high speed. Control or orien- 

 tation of the motors, which rotate together 

 or individually 360 degrees in the vertical, is 

 quite simple: The operator merely pushes or 

 pulls a crank-like bar connected to the mo- 

 tors which rotates within a thru-hull pene- 

 tration (Fig. 8.27). The motors are pressure- 

 compensated to 150 feet and produced by 

 Phantom Motors, Kansas City, Mo. Because 

 there are no slip rings in the rotating sys- 

 tem, the operator must be careful not to 



rotate the motors beyond 360 degrees or else 

 he runs the risk of breaking the wires. 



SDL-1 : 



The SDL-1 is propelled by two independ- 

 ently controlled motors which are mounted 

 in the horizontal plane port and starboard. 

 Each motor is compound wound, 120 VDC, 5 

 hp, reversible and drives a screw-type pro- 

 peller. A 4:1 planetary reduction gear is cou- 

 pled to each motor armature. Both motor 

 casing and reduction gear housing are indi- 

 vidually pressure-compensated. Control of 

 each motor is obtained from a Wismer and 

 Rawlings 50-amp, 60- and 120-VDC, 3-step 

 reversing control unit. The throttle box is 

 portable and may be moved about in the 

 control (forward) pressure sphere. Two 7-step 

 rotary switches are mounted on opposite 

 sides of the throttlebox, providing three 

 speeds forward, three speeds aft and neutral 

 or OFF. The propulsion motors may be oper- 

 ated together or independently at any combi- 

 nation of speeds and in opposition. Rheostats 

 on the motor starters provide speed adjust- 

 ment over a small range to equalize propul- 

 sive thrust of both motors. Ammeters are 

 provided to monitor currents. Schematics of 

 SDL-1 showing these systems were not 



Fig. 8.27 Manual propulsion control on the K-250 series. 

 398 



