12. The railing supports on the deck should be closer together, 

 and the vertical railing members should be heavier and fastened 

 to the deck with two side flanges instead of deck flanges. 



13. The deck folding "strap hinges" should be replaced by "T- 

 butt" hinges, or other stronger hinges. 



14. To minimize the risk of damage to the FTB, folding, unfolding, 

 deployment, and retrieval procedures given in Appendix C must 



be strictly observed. 



15. No design changes should be carried out on this folding 

 FTB without prior consultation with the manufacturer. 



16. The specifications of the FTB and the Navy boom should 



be coordinated so that the usable width of the FTB (or the usable 

 length if fore and aft faking is planned in future FTB design) 

 will be slightly in excess of an integral number of the length 

 of the boom float at which the boom could be easily folded without 

 damage . 



17. The FTB may be used for: 



transporting people, boom, and equipment between pier 

 and spill site, 



- towing a towable storage bag, 



- deploying and retrieving boom mooring systems, 

 connecting and disconnecting sections of boom, and, 



- deployment and retrieval of boom. 



18. When not in use, the folding FTB should be stored on land. 



Mooring Systems 



1. The length of the mooring line connecting the boom to 

 the buoy need not exceed 10 to 15 feet to minimize drift of 

 the boom under winds, waves, and current conditions. 



2. The location of the anchor should be determined from the 

 desired location of the boom and the length of the mooring line. 



3. The deployment of the boom and the mooring systems should 

 be carried out simultaneously so that the boom can be secured 

 during deployment, particularly in bad weather conditions, to 

 prevent boom drifts due to winds and currents. 



47 



