(but without instruments) were placed around the instrumented buoy approxi- 

 mately 200 ft away. 



23. To allow the meter to rotate around the mooring as current direc- 

 tions changed without fouling on the mooring, a split Teflon bearing sleeve 

 was attached to the 1/4- in. cable at the appropriate depth for each string. A 

 hinged stainless steel clamp went around the bearing and locked with a captive 

 hinge pin. The meter was attached to a ring on the clamp with a 3/8 -in. 

 screw-pin shackle, safety wired after closure. This arrangement permitted 

 rotational freedom and a means for diver changeout of the gage during 

 inspection without recovering the entire mount. 



Deployment /recovery 



24. In addition to routine electronic predeployment testing, each gage 

 was balanced for neutral buoyancy and horizontal trim. Adjustments for varia- 

 tions in gage construction, battery weight, and local water density were made 

 by placing lead trim weights at the front and rear of the meter. This adjust- 

 ment ensured that the meter aligned with the water flow, especially in the 

 low-velocity conditions expected in the harbor. 



25. Deployment was similar to the tide gage installation. All nine 

 current meter strings were put in place on 3 and 4 August from the "Sea 

 Watch." On 9 August, each meter was visually inspected by CERC divers to 

 verify proper deployment and operation. Inspection included secure attachment 

 and safety wiring of the shackles and sleeve/bearing assembly, neutral buoyan- 

 cy and horizontal trim, no restrictions to either impeller or swivels, overall 

 integrity of the mooring components, and functioning of the marker lights. 



26. The first instrument casualty was discovered during the 9 August 

 inspection. The buoy at current meter Site 8 (CM8) was not on station, but 

 the meter was discovered shortly afterward washed up on the west jetty of Ana- 

 heim Bay Inlet. The wire cable (not, interestingly, the rubber cord) had 

 parted near the lower end, most likely pulled by a vessel. The single meter 

 was still attached, and though it was damaged, the data tape was recovered 

 intact. The spare current meter was installed as CM8 on 15 August. The com- 

 plete history of lost and damaged instruments is covered in the subsequent 

 section headed "Data Recovery." 



15 



