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Evaluating Propeller Cuts Using Photographs of Marine Mammal Carcasses and Living Animals James L. Wood Lumatrex, Inc. jlwood@lumatrex.com Evaluating Propeller Cuts 1 Slide 2 Goals For These Methods Use Photographs of Propeller Cuts Suitable For Carcasses and Living Animals Suitable For Any Size Propeller 2 Slide 3 Current Status Research and Development Phase Is Complete Two Test Cases Have Been Evaluated Proposal Requesting Grants For Preparing A Technical Report Has Been Prepared 3 Slide 4 Test Cases Right Whale Necropsy RKB-1424 Uses photographs taken during the necropsy Right Whale #2425 Live Individual Uses photographs of living adult animal http://www.lumatrex.com 4 Slide 5 Right Whale Necropsy RKB - 1424 Calf Length 581 cm (19 feet) Approximate Weight 4500 lbs Adult right whale was also present Struck by USCG Cutter Point Francis January 5, 1993 Reported by Commanding Officer 5 Slide 6 Original Necropsy Drawings 6 Slide 7 RKB-1424 Necropsy Photo Cut Series I 7 Slide 8 Evaluation Results - Cut Series I Created by the USCG Cutter Point Francis (WPB 82356) Propeller Diameter 114.6 cm (45 inches) Propeller Blades 5 Propeller Rotation Clockwise (CW) Advance Coefficient 0.65 Propeller Pitch - > 29 inches Vessels Approach from directly ahead of whale First Propeller Strike Cut #18 Initial Speed of Whale 4.8 knots Maximum Speed of Whale 6.6 knots (Cut #11) Final Speed of Whale 0 knots 8 Slide 9 Changes in Speed of Whale 9 Slide 10 Known Details - Vessel USCG Cutter Point Francis (WPB 82356) Length 82 feet Weight 67 gross tons Twin Screws Propeller Diameter - 3.5 feet (42 inches) Propeller Blades 5 Propeller Pitch unknown Average Speed of Vessel 14.2 knots Rotation Speed of Prop 600 srpm (Turns for 15 knots) Advance Coefficient @ 14.2 knots and 600 srpm 0.68 10 Slide 11 RKB-1424 Photo Cut Series II 11 Slide 12 Right Whale 2425 Adult about 11 years old Estimated Fluke Width 440 cm Struck off Cumberland Island, Georgia March 10, 2005 Reported by Vessels Operator 12 Slide 13 Right Whale 2425 Prop Cuts Wildlife Trust/Georgia DNR 13 Slide 14 Prop Cut Series I on Left Fluke New England Aquarium 14 Slide 15 Prop Cut Series I on Left Fluke New England Aquarium 15 Slide 16 Evaluation Results - Cut Series I Propeller Diameter 64 cm (25 inches) Propeller Blades 4 Propeller Rotation Counter Clockwise Vessel Advance Coefficient 1.05 Propeller Pitch - > 27 inches 16 Slide 17 Prop Cut Series II Wildlife Trust/Georgia DNR17 Slide 18 Evaluation Results - Cut Series II Propeller Diameter 72 cm (28 inches) or 63 cm (25 inches) Propeller Blades 4 Propeller Rotation Clockwise Vessel Advance Coefficient 0.80 or 0.90 Propeller Pitch - > 23 inches 18 Slide 19 Evaluation Results - Combined Propeller Diameter 66 cm (26 inches) Propeller Blades 4 Propeller Pitch - > 25 in. (Prop Advance 25 in.) Vessel Advance Coefficient 0.92 Vessels Length 40 to 50 feet Vessels Beam Approx. 13 feet Vessels Approach from right rear of whale Whales Fluke Width 494 cm 19 Slide 20 Vessel Allegedly Involved 20 Slide 21 500 hp Cut Span 21 Slide 22 500 hp Advance Coefficient 22 Slide 23 500 hp Slip 23 Slide 24 Vessel Details Sabreline 42 Express Cruiser Length 42 3 Beam 14 4 Weight 29,000 lbs. Twin Screws Propeller Diameter - 26 inches Propeller Blades 4 Propeller Pitch 35 inches (Prop Advance 24.5 inches) Gear Ratio 2.227:1 Engine Speed @ 20 Knots 2227 rpm Propeller Speed @ 20 Knots 1000 rpm Advance Coefficient @ 20 knots 0.94 24 Slide 25 Goals Achieved Uses Photographs of Propeller Cuts Suitable for Carcasses and Living Animals Suitable for Any Size Propeller 25 Slide 26 Future Actions Prepare a technical report documenting these methods Have technical report peer reviewed and published Develop computer software to automate the calculations included in these methods 26 Slide 27 Right Whale Necropsy RKB-1424 Right Whale #2425 Live Individual http://www.lumatrex.com Proposal for Technical Report James L. Wood jlwood@lumatrex.com 321-956-1939 27