5. Towing boom from a samson post - fairlead arrangement instead of the 

 transom of the UTB significantly improved the maneuverability and the 

 stability of the UTB. However, both the samson post and the fairlead were 

 felt to be too high . 



6. In a straight run with maximum throttle with no load, one 6-gal fuel 

 tank lasted only 39.2 minutes. While towing the 900-ft mixed boom at 

 maximum throttle, however, the same amount of fuel lasted 49.75 minutes. 

 One fuel tank may, therefore, be insufficient for uninterrupted operation 

 of the UTB in harbor oil spill situations. 



7. Caution must be observed to ensure that the towing line does not get 

 entangled during paying, retrieval, and/or storage. 



8. The fairlead caused wear of the tow line at the point of contact 

 which required frequent changes in the tow line contact point. 



9. The life of UTB outboard engines (Johnson 85 hp) is drastically 

 reduced if they are run continuously at full throttle. 



10. A towing length of 50 ft was found to be adequate under the calm 

 conditions of the Port Hueneme harbor. 



11. The UTB could be used to tow a full oil storage bag, to connect and 

 disconnect boom sections, to tow a FTB, and to deploy the small mooring 

 system. 



12. Lines of 3/4-inch diameter, polyester cover, polypropylene core, 

 2-in-l stable braid were found to be adequate for all towing operations. 

 However, these lines do not float. 



13. The size of the UTB is not adequate to deploy the medium and the 

 large mooring systems. 



14. The outboard engine's outboard cooling system becomes easily clogged 

 with debris found in harbors . 



15. The holding power of the UTB with an 85 hp Johnson engine is 1,000 lb. 



16. The UTB appears to lack stability, and the 85 hp Johnson engine 

 appears to lack power for cleanup operations under less than perfect 

 weather conditions. Extreme caution is required even under near-perfect 

 weather conditions. 



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