64 UMBILICAL CORD 



BINDING 



Fig. 32. Cross section of umbilical cord 



Details of Components 



The individual components of the umbilical cord shall be as specified herein. 



1. Electrical Power 



a. Cable . The power cable shall be Navy type THOF-42 of MIL-C-915, or a suitable com- 

 merciaT equivalent. The cable shall be 350 ft plus additional length to reach from the top access 

 trunk to the termination point inside Sealab. The cable shall be in one continuous length. 



b. Stuffing Tube, Sealab End . The power cable shall be permanently connected and shall 

 enter the hull through pressure -proof stuffing tubes near the bottom of the hull. The pressure- 

 proof stuffing tube shall be similar to tubes shown on BuShips Drawing 815-1197030. 



c. Plug, Support-Vessel End . The plug shall be a Crouse-Hinds Catalog No. AP20465. The 

 plug shall have a male insert. A protective cap, Crouse-Hinds Catalog No. CPK-104, shall be 

 provided and secured to the plug with a chain or small stainless steel cable. 



2. Communications 



a. Cable. The communication cable shall be Boston Insulated Wire Company No. TV-33N 

 or equal. Conductor usage is outlined in the communication specifications. The cable shall be 

 350 ft, plus additional length to reach from top access trunk to termination point in Sealab. The 

 cable shall be in one continuous length. A 150-ft continuous length of the cable shall be furnished 

 to NOTS, Pasadena. 



b. Stuffing Tube, Sealab End . The communication cable shall be permanently connected 

 and shall enter the hull through pressure-proof stuffing tubes near the bottom of the hull. The 

 pressure -proof stuffing tube shall be similar to tubes shown on BuShips Drawing 815-1197030. 



c. Plug, Support Vessel End. The plug on support vessel end shall be waterproof with cap 

 and chain or provided with a waterproof boot. 



3. Gas Sampling 



a. Hose . The gas-sampling hose shall be a l/4-in. I.D. x 19/32-in. O.D. welding hose for 

 oxygen service, 250 psig working pressure, and shall be Gates No. 16B or equal. The hose shall 

 be in one continuous length. 



