South West of England Regional Development Agency Wave Hub Development and Design Phase Wave Energy Converters Mooring System Study May 200
South West of England Regional Development Agency Wave Hub Development and Design Phase Wave Energy Converters Mooring System Study May 200 Contents Amendment Record!" #$#! % & '(!" #$# # )!" #$# # *!" #$# + ' # '!!*!" &
Contents 1 Introduction 1 2 Summary & Recommendations 3! "#$! % "& #! ' ( $ % 3 Study Assumptions 8 ) ) * &!! "#& #! % * +"# % 4 Mooring Results Box Shaped WEC 18 # ) + - ) ". * -! ** % $ "& /#- % 5 Mooring Results - Cylindrical WEC 27! # '! + - '! " )! * - 0!! **!% $ "& /#-
Mooring Results - Navigational Buoy 35 % #! % + -! % " ) % * - ) %! **. %% $ "& /#-. 7 Anchoring Systems 40 ' 0 ' "& /#- 0 ' "& # 0 8 Installation and Removal 42 ) "& #( ) *( ) $ List of Figures List of Tables i ii
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2 Summary & Recommendations " # -&4 $ 3 74; 3 ; ; ; ; 3 3 + ; @$ 3 -&4A @4 -&4A < @ A ; -&4 ; B # 0 )1 4 $ -.4 0@A*!% 0 @A*'(- Easting = 143283.5 Northing = 57818.5 - *!2"* 0 -&4%$ 0 *@. A!@./ A - + 9=#1-$ - + 9=#1 4 + 9=#1 WGEHDD020-0-R-003-2 3
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Table 3.1 - Extreme Wave Conditions for SW Wave Hub Location Wave Direction ALL 15 45 75 105 135 15 195 225 285 315 345 (Deg) Return Period Hs(m) T(s) Hs(m) T(s) Hs(m) T(s) Hs(m) T(s) Hs(m) T(s) Hs(m) T(s) Hs(m) T(s) Hs(m) T(s) Hs(m) T(s) Hs(m) T(s) Hs(m) T(s) Hs(m) T(s) (1 in X yr) 1 10.4 12.1 3.8 7.4 3.5 7.2 3.1.7 3.8 7.5 3.4 7.0 4.0 7. 5.5 8.8 7.5 10.3 9.0 11.3 5.0 8.5 4.7 8.2 2 11.0 12.4 4.1 7.7 3.8 7.4 3.3.9 4.1 7.7 3.7 7.3 4.3 7.9 5.8 9.1 7.9 10. 9. 11. 5.4 8.8 5.0 8.5 5 11.9 12.9 4.4 7.9 4.1 7.7 3.5 7.2 4.3 7.9 4.1 7.7 4. 8.2.2 9.4 8.4 10.9 10.4 12.1 5.8 9.1 5.3 8.8 10 12.5 13.2 4. 8.1 4.4 8.0 3.7 7.3 4.5 8.1 4.4 8.0 4.9 8.4.5 9. 8.8 11.1 11.0 12.4.1 9.4 5. 9.0 20 13.1 13.5 4.8 8.3 4. 8.1 3.8 7.5 4.7 8.2 4. 8.2 5.1 8..8 9.8 9.1 11.3 11. 12.7.4 9. 5.9 9.2 50 13.8 13.9 5.0 8.5 4.9 8.4 4.0 7. 4.9 8.4 4.9 8.4 5.4 8.8 7.2 10.1 9. 11. 12.3 13.1.8 9.8.2 9.4 100 14.4 14.1 5.2 8. 5.1 8.5 4.2 7.7 5.0 8.5 5.2 8. 5. 8.9 7.4 10.3 9.9 11.8 12.8 13.4 7.0 10.0.4 9.5 200 15.0 14.4 5.4 8.8 5.3 8.7 4.3 7.9 5.2 8. 5.4 8.8 5.7 9.1 7. 10.4 10.2 12.0 13.4 13. 7.3 10.2. 9.7 Notes: 1. Results are based on Met Office RESULTANT wave data 3 hour events and whole record (JULY 1998 TO MAY 2005) 2. Length of record is 1.75 years accounting for gaps 3. Weibull fit WGEHDD020-0-R-003-2 10
Table 3.2 - Extreme Wind Data for SW Wave Hub Location Return Period Wind Speed (m/s) (1 in x yr) Weibul Fit Gumbel Fit 0.1 22.374 21.342 0.2 23.9 22.928 0.3 24.427 23.855 0.5 25.324 25.023 1 2.493 2.07 2 27.11 28.191 3 28.244 29.118 5 29.022 30.285 10 30.045 31.89 20 31.034 33.453 30 31.597 34.38 50 32.293 35.547 100 33.214 37.131 200 34.11 38.715 300 34.23 39.42 500 35.259 40.809 1000 3.103 42.393 2000 3.927 43.977 3000 37.401 44.903 5000 37.99 4.071 10000 38.774 47.55 Notes: 1. Results based on Met Office data July 1998 to May 2005 2. Based on SANDS analysis all directions 3. Weibul fit $$ %! @ A ; ; -&4 @*A )!!;*;'*!;*(*8!; +'- ; 4 33;D 3@ A WGEHDD020-0-R-003-2 11
$2%! # - B' 4I* 3-&4@ A;4I! -&4!*? ' "8? ' 2 F = 0.5 ρ CD A V @' A - ''' $ 3-&4 $$ 5)/ %& Direction 90 112.5 135 157.5 180 Area [m2] 250.0 32. 353. 32. 250.0 CD 1.5 1.5 1.5 1.5 1.5 rho-water 1.18 1.18 1.18 1.18 1.18 Vw [m/s] 33.214 33.214 33.214 33.214 33.214 Fw [N] 2.41E+05 3.157E+05 3.417E+05 3.157E+05 2.41E+05 Fw-x [N] 0.000E+00-1.208E+05-2.41E+05-2.91E+05-2.41E+05 Fw-y [N] 2.41E+05 2.91E+05 2.41E+05 1.208E+05 0.000E+00 Fw-z [N] 0.000E+00 0.000E+00 0.000E+00 0.000E+00 0.000E+00 Arm-x [m] 0.0 0.0 0.0 14.7 0.0 Arm-y [m] 0.0-14.7 0.0 0.0 0.0 Arm-z [m] 2.5 2.5 2.5 2.5 2.5 Mw-x [N-m] -.040E+05-7.291E+05 -.040E+05-3.020E+05 0.000E+00 Mw-y [N-m] 0.000E+00-3.020E+05 -.040E+05-7.291E+05 -.040E+05 Mw-z [N-m] 0.000E+00-1.770E+0 0.000E+00 1.770E+0 0.000E+00 WGEHDD020-0-R-003-2 12
$'&5)/ %& Direction 90 112.5 135 157.5 180 Area [m2] 500.0 53.3 707.1 53.3 500.0 CD 1.5 1.5 1.5 1.5 1.5 rho-water 1025 1025 1025 1025 1025 Vw [m/s] 3.87 3.87 3.87 3.87 3.87 Fw [N] 5.757E+0 7.522E+0 8.141E+0 7.522E+0 5.757E+0 Fw-x [N] 0.000E+00-2.878E+0-5.757E+0 -.949E+0-5.757E+0 Fw-y [N] 5.757E+0.949E+0 5.757E+0 2.878E+0 0.000E+00 Fw-z [N] 0.000E+00 0.000E+00 0.000E+00 0.000E+00 0.000E+00 Arm-x [m] 0.0 0.0 0.0 14.7 0.0 Arm-y [m] 0.0-14.7 0.0 0.0 0.0 Arm-z [m] -5-5 -5-5 -5 Mw-x [N-m] 2.878E+07 3.475E+07 2.878E+07 1.439E+07 0.000E+00 Mw-y [N-m] 0.000E+00 1.439E+07 2.878E+07 3.475E+07 2.878E+07 Mw-z [N-m] 0.000E+00-4.231E+07 0.000E+00 4.231E+07 0.000E+00-4-&4 '*'" $* & )/ %& Direction 90 112.5 135 157.5 180 Area [m2] 50 50 50 50 50 CD 1 1 1 1 1 rho-water 1.18 1.18 1.18 1.18 1.18 Vw [m/s] 33.214 33.214 33.214 33.214 33.214 Fw [N] 3.221E+04 3.221E+04 3.221E+04 3.221E+04 3.221E+04 Fw-x [N] 0.000E+00-1.233E+04-2.278E+04-2.97E+04-3.221E+04 Fw-y [N] 3.221E+04 2.97E+04 2.278E+04 1.233E+04 0.000E+00 Fw-z [N] 0.000E+00 0.000E+00 0.000E+00 0.000E+00 0.000E+00 Arm-x [m] 0.0 0.0 0.0 0.0 0.0 Arm-y [m] 0.0 0.0 0.0 0.0 0.0 Arm-z [m] 2.5 2.5 2.5 2.5 2.5 Mw-x [N-m] -8.053E+04-7.440E+04-5.94E+04-3.082E+04 0.000E+00 Mw-y [N-m] 0.000E+00-3.082E+04-5.94E+04-7.440E+04-8.053E+04 Mw-z [N-m] 0.000E+00 0.000E+00 0.000E+00 0.000E+00 0.000E+00 WGEHDD020-0-R-003-2 13
$.&& )/ %& Direction 90 112.5 135 157.5 180 Area [m2] 200 200 200 200 200 CD 1 1 1 1 1 rho-water 1025 1025 1025 1025 1025 Vw [m/s] 3.87 3.87 3.87 3.87 3.87 Fw [N] 1.535E+0 1.535E+0 1.535E+0 1.535E+0 1.535E+0 Fw-x [N] 0.000E+00-5.875E+05-1.08E+0-1.418E+0-1.535E+0 Fw-y [N] 1.535E+0 1.418E+0 1.08E+0 5.875E+05 0.000E+00 Fw-z [N] 0.000E+00 0.000E+00 0.000E+00 0.000E+00 0.000E+00 Arm-x [m] 0.0 0.0 0.0 0.0 0.0 Arm-y [m] 0.0 0.0 0.0 0.0 0.0 Arm-z [m] -10-10 -10-10 -10 Mw-x [N-m] 1.535E+07 1.418E+07 1.08E+07 5.875E+0 0.000E+00 Mw-y [N-m] 0.000E+00 5.875E+0 1.08E+07 1.418E+07 1.535E+07 Mw-z [N-m] 0.000E+00 0.000E+00 0.000E+00 0.000E+00 0.000E+00 - '('8 %$ ; $0 Direction 90 112.5 135 157.5 180 Area [m 2 ] 5.3 5.3 5.3 5.3 5.3 CD - - - - - rho-water 1.18 1.18 1.18 1.18 1.18 Vw [m/s] 1.97 1.97 1.97 1.97 1.97 Fw [N] 1.208E+03 1.208E+03 1.208E+03 1.208E+03 1.208E+03 Fw-x [N] 0.000E+00-4.24E+02-8.545E+02-1.11E+03-1.208E+03 Fw-y [N] 1.208E+03 1.11E+03 8.545E+02 4.24E+02 0.000E+00 Fw-z [N] 0.000E+00 0.000E+00 0.000E+00 0.000E+00 0.000E+00 Arm-x [m] 0.0 0.0 0.0 0.0 0.0 Arm-y [m] 0.0 0.0 0.0 0.0 0.0 Arm-z [m] 2.0 2.0 2.0 2.0 2.0 Mw-x [N-m] -2.407E+03-2.224E+03-1.702E+03-9.211E+02 0.000E+00 Mw-y [N-m] 0.000E+00-9.211E+02-1.702E+03-2.224E+03-2.407E+03 Mw-z [N-m] 0.000E+00 0.000E+00 0.000E+00 0.000E+00 0.000E+00 WGEHDD020-0-R-003-2 14
$& Direction 90 112.5 135 157.5 180 Area [m 2 ] 2.5 2.5 2.5 2.5 2.5 CD - - - - - rho-water 1.18 1.18 1.18 1.18 1.18 Vw [m/s] 3.87 3.87 3.87 3.87 3.87 Fw [N] 2.149E+04 2.149E+04 2.149E+04 2.149E+04 2.149E+04 Fw-x [N] 0.000E+00-8.225E+03-1.520E+04-1.98E+04-2.149E+04 Fw-y [N] 2.149E+04 1.98E+04 1.520E+04 8.225E+03 0.000E+00 Fw-z [N] 0.000E+00 0.000E+00 0.000E+00 0.000E+00 0.000E+00 Arm-x [m] 0.0 0.0 0.0 0.0 0.0 Arm-y [m] 0.0 0.0 0.0 0.0 0.0 Arm-z [m] -0.8-0.8-0.8-0.8-0.8 Mw-x [N-m] 1.74E+04 1.13E+04 1.235E+04.82E+03 0.000E+00 Mw-y [N-m] 0.000E+00.82E+03 1.235E+04 1.13E+04 1.74E+04 Mw-z [N-m] 0.000E+00 0.000E+00 0.000E+00 0.000E+00 0.000E+00 $' "/ & ;&: ; '!;H - ;-.: ; + G C!!" ; ; #0 % *"*''2; H: ; -. 1 G; C!!"4/ 3" ; ;? ; 4 @A; B 4 F -&4 / -&4 ; ; #? $* ( + ( / 33 -&4 WGEHDD020-0-R-003-2 15
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'.(!!35)/ %&3! & Environmental Direction Mooring Line No. Static Load at Fairlead Dynamic Load at Fairlead - 2*RMS Total Load Total / Breaking Load [deg] [-] [N] [N] [N] % 90 1 1.7E+0 9.43E+05 3.424E+0 29.44% 90 2 2.27E+0 3.94E+05 3.003E+0 25.82% 90 3 2.13E+0.84E+05 3.402E+0 29.25% 90 4 2.27E+0 3.94E+05 3.003E+0 25.82% 90 5 1.7E+0 9.42E+05 3.422E+0 29.42% 90 2.13E+0.83E+05 3.400E+0 29.24% 90 7 1.44E+0 9.78E+05 3.259E+0 28.02% 90 8 7.31E+05 2.41E+05 1.179E+0 10.14% 90 9 1.04E+0 7.73E+05 2.478E+0 21.31% 90 10 7.31E+05 2.41E+05 1.179E+0 10.14% 90 11 1.44E+0 9.79E+05 3.21E+0 28.04% 90 12 1.04E+0 7.73E+05 2.478E+0 21.31% 112.5 1 2.12E+0.85E+05 3.394E+0 29.18% 112.5 2 2.48E+0 8.40E+05 4.042E+0 34.7% 112.5 3 2.52E+0 7.95E+05 3.999E+0 34.38% 112.5 4 2.43E+0 8.33E+05 3.979E+0 34.22% 112.5 5 1.33E+0 4.32E+05 2.134E+0 18.34% 112.5 2.03E+0 5.82E+05 3.113E+0 2.7% 112.5 7 1.08E+0.02E+05 2.200E+0 18.91% 112.5 8 4.91E+05 7.92E+05 1.94E+0 1.89% 112.5 9.34E+05 7.13E+05 1.90E+0 1.85% 112.5 10.84E+05.99E+05 1.984E+0 17.0% 112.5 11 1.80E+0.17E+05 2.948E+0 25.34% 112.5 12 1.25E+0 4.14E+05 2.020E+0 17.37% 135 1 2.43E+0 7.20E+05 3.79E+0 32.41% 135 2 2.43E+0 7.0E+05 3.743E+0 32.19% 135 3 2.2E+0 8.05E+05 4.117E+0 35.40% 135 4 2.23E+0 5.95E+05 3.337E+0 28.9% 135 5 9.29E+05 3.81E+05 1.38E+0 14.08% 135 1.7E+0 2.84E+05 2.198E+0 18.90% 135 7.54E+05 5.7E+05 1.725E+0 14.84% 135 8.54E+05 5.54E+05 1.84E+0 14.48% 135 9 4.48E+05 7.84E+05 1.90E+0 1.39% 135 10 9.29E+05 3.54E+05 1.587E+0 13.5% 135 11 2.23E+0.14E+05 3.372E+0 28.99% 135 12 1.7E+0 3.00E+05 2.228E+0 19.1% 157.5 1 2.48E+0 1.19E+0 4.93E+0 40.3% 157.5 2 2.12E+0 1.09E+0 4.147E+0 35.% 157.5 3 2.52E+0 9.84E+05 4.350E+0 37.41% 157.5 4 1.80E+0 1.1E+0 3.958E+0 34.03% 157.5 5.84E+05 1.05E+0 2.37E+0 22.7% 157.5 1.25E+0 5.31E+05 2.238E+0 19.24% 157.5 7 4.92E+05 1.14E+0 2.12E+0 22.4% 157.5 8 1.08E+0 1.25E+0 3.405E+0 29.28% 157.5 9.35E+05 8.00E+05 2.123E+0 18.25% 157.5 10 1.33E+0 7.02E+05 2.3E+0 22.% 157.5 11 2.43E+0 1.32E+0 4.885E+0 42.01% 157.5 12 2.03E+0 8.77E+05 3.1E+0 31.48% 180 1 2.24E+0 9.E+05 4.037E+0 34.71% 180 2 1.E+0 3.97E+05 2.398E+0 20.2% 180 3 2.11E+0 7.82E+05 3.55E+0 30.5% 180 4 1.44E+0 2.8E+05 1.938E+0 1.7% 180 5 7.2E+05 9.47E+05 2.523E+0 21.70% 180 1.05E+0.2E+05 2.214E+0 19.04% 180 7 7.2E+05 9.47E+05 2.523E+0 21.70% 180 8 1.44E+0 2.8E+05 1.938E+0 1.7% 180 9 1.05E+0.2E+05 2.214E+0 19.04% 180 10 1.E+0 3.97E+05 2.398E+0 20.2% 180 11 2.24E+0 9.9E+05 4.042E+0 34.7% 180 12 2.11E+0 7.82E+05 3.55E+0 30.5% WGEHDD020-0-R-003-2 24
'02(!!35)/ %&3! & Environmental Direction Mooring Line No. Static Load at Fairlead Dynamic Load at Fairlead - 2*RMS Total Load Total / Breaking Load [deg] [-] [N] [N] [N] % 90 1 1.8E+0 3.2E+05 2.4E+0 21.207% 90 2 2.57E+0 9.33E+05 4.305E+0 37.020% 90 3 1.8E+0 3.27E+05 2.48E+0 21.223% 90 4 1.05E+0 9.22E+05 2.75E+0 23.774% 90 5 2.25E+0.17E+05 3.398E+0 29.214% 90 2.51E+0 8.50E+05 4.091E+0 35.17% 90 7 2.51E+0 8.51E+05 4.093E+0 35.192% 90 8 2.25E+0.18E+05 3.399E+0 29.230% 90 9 1.50E+0 4.33E+05 2.305E+0 19.823% 90 10 1.20E+0 7.72E+05 2.3E+0 22.5% 90 11 1.20E+0 7.73E+05 2.38E+0 22.81% 90 12 1.50E+0 4.33E+05 2.305E+0 19.823% 112.5 1 2.2E+0 5.7E+05 3.315E+0 28.501% 112.5 2 2.24E+0 8.87E+05 3.890E+0 33.44% 112.5 3 1.51E+0 3.2E+05 2.11E+0 18.197% 112.5 4 9.09E+05 8.19E+05 2.432E+0 20.914% 112.5 5 2.E+0 8.14E+05 4.174E+0 35.890% 112.5 2.83E+0 9.2E+05 4.552E+0 39.143% 112.5 7 2.49E+0 7.02E+05 3.79E+0 32.37% 112.5 8 2.05E+0 4.12E+05 2.81E+0 24.21% 112.5 9 1.09E+0.72E+05 2.340E+0 20.120% 112.5 10 8.0E+05 9.0E+05 2.545E+0 21.884% 112.5 11 1.30E+0 4.48E+05 2.133E+0 18.343% 112.5 12 1.80E+0 3.00E+05 2.358E+0 20.275% 135 1 2.1E+0 7.84E+05 4.08E+0 34.981% 135 2 2.1E+0 7.84E+05 4.08E+0 34.981% 135 3 1.11E+0 5.79E+05 2.187E+0 18.804% 135 4 1.11E+0 5.79E+05 2.187E+0 18.804% 135 5 2.88E+0 9.32E+05 4.14E+0 39.9% 135 2.88E+0 9.32E+05 4.14E+0 39.9% 135 7 2.21E+0 5.10E+05 3.159E+0 27.159% 135 8 1.E+0 2.94E+05 2.207E+0 18.975% 135 9 8.13E+05 8.89E+05 2.47E+0 21.208% 135 10 8.13E+05 8.89E+05 2.47E+0 21.208% 135 11 1.E+0 2.94E+05 2.207E+0 18.975% 135 12 2.21E+0 5.09E+05 3.157E+0 27.143% 157.5 1 2.24E+0 9.07E+05 3.927E+0 33.7% 157.5 2 2.2E+0 5.78E+05 3.335E+0 28.77% 157.5 3 9.09E+05 8.38E+05 2.48E+0 21.218% 157.5 4 1.51E+0 3.33E+05 2.129E+0 18.309% 157.5 5 2.83E+0 9.47E+05 4.591E+0 39.479% 157.5 2.E+0 8.32E+05 4.208E+0 3.178% 157.5 7 1.80E+0 3.0E+05 2.39E+0 20.371% 157.5 8 1.30E+0 4.9E+05 2.223E+0 19.111% 157.5 9 8.0E+05 9.2E+05 2.582E+0 22.204% 157.5 10 1.09E+0.8E+05 2.3E+0 20.344% 157.5 11 2.05E+0 4.22E+05 2.835E+0 24.37% 157.5 12 2.49E+0 7.19E+05 3.827E+0 32.909% 180 1 2.54E+0 9.55E+05 4.31E+0 37.113% 180 2 1.85E+0 3.33E+05 2.49E+0 21.233% 180 3 1.08E+0 9.45E+05 2.838E+0 24.400% 180 4 1.85E+0 3.32E+05 2.48E+0 21.217% 180 5 2.48E+0 8.70E+05 4.098E+0 35.238% 180 2.24E+0.30E+05 3.412E+0 29.33% 180 7 1.51E+0 4.48E+05 2.343E+0 20.149% 180 8 1.22E+0 7.93E+05 2.95E+0 23.173% 180 9 1.22E+0 7.94E+05 2.97E+0 23.189% 180 10 1.51E+0 4.48E+05 2.343E+0 20.149% 180 11 2.24E+0.29E+05 3.410E+0 29.320% 180 12 2.48E+0 8.70E+05 4.098E+0 35.238% WGEHDD020-0-R-003-2 25
'. -+/ $ 3-& ; 3*; 0 8 3 D!?% "!!?%3;3 8 3 '2(!!+/35)/ %& Box Shape Mooring Lines at Corners Mooring Lines at Center WEC Static Total Static Total Ftot [N] 2.41E+0 4.14E+0 2.87E+0 4.0E+0 Fx [N] -2.40E+0-4.13E+0-2.42E+0-3.89E+0 Fy [N] -1.47E+05-2.53E+05 1.53E+0 2.4E+0 Fz [N].13E+04 1.05E+05 9.02E+04 1.45E+05 Fhor [N] 2.40E+0 4.14E+0 2.8E+0 4.0E+0 angle [deg] 1.5 1.5 1.8 1.8 WGEHDD020-0-R-003-2 2
5 Mooring Results - Cylindrical WEC! "! #$ %%%&& & '()( *(!!& + #$!" - /!- - +- - 23- %35 0 - %35 0 - %&&35 0 - '(- )(- *(- $.. 0#. 0.. #. $1$. $1$.$"4.1 0010"4.7 0010"4.7 1.8"4.1.... 0.. 0..!! + #$ 9! #0 WGEHDD020-0-R-003-2 27
*2( 3: & %& *+ # &33 2: & %& #. / M J%2K J%2K J%2K J%22K J%22K J%22K ( &O!' ( &O!' 8'&O!* (&O!" (&O!"!!!!&O!! *$ ( + 3 -&4 3 3 -&4 +* WGEHDD020-0-R-003-2 28
*2(! ) : & %& *$(! ( +7 +3& %&& 3 WGEHDD020-0-R-003-2 29
*'(! ( +7 +3& %&&3 *' (! & 2 2; 3 *; **; *! 2D ; 4 *'4 * ** ; *$2(! ;3: & %&( 0 # 7 $? @A JK J?K J K J%K 0 J%K 4P * **! "&2!!&O!) '&O!( / 0 ** ( "'!&2! '!!"&O!" " &O!( 4 *! **! "&2!!&O!) '&O!( P *! WGEHDD020-0-R-003-2 30
*'2(! +/ 3: & %& & 38 # % JK -&4JK @(';!!!;2**!A @ ';*;2!!A @(';2!!!;2**!A @ ';2*;2!!A ' @!!;2!!!;2**!A @!!;2*!;2!!A @2(';2!!!;2**!A @2 ';2*;2!!A * @2(';!!!;2**!A @2 ';*;2!!A " @!!;!!!;2**!A @!!;*!;2!!A P 3;;DDI! **2(! +/ 3: & %&& 8 # % JK -&4JK @(';!!!;2**!A @!!;!!;2!!A @(';2!!!;2**!A @!!;!!;2!!A ' @!!;2!!!;2**!A @!!;!!;2!!A @2(';2!!!;2**!A @!!;!!;2!!A * @2(';!!!;2**!A @!!;!!;2!!A " @!!;!!!;2**!A @!!;!!;2!!A P 3;;DDI! ** (!! # 4-&4*"*(; B2 ; ; + )! 8!* 3 < 3!! )!?%!! "*!?% 0?@$0A ; ((E 8'E ; ((E!"E D -&4 3-&4; D 0D 3 WGEHDD020-0-R-003-2 31
2 ; D Environmental Direction Table 5. - Mooring Line Loads for Cylinder WEC for Lines at Circumference Mooring Line No. Static Load at Fairlead Dynamic Load at Fairlead - 2*RMS Total Load Total / Breaking Load [deg] [-] [N] [N] [N] % 90.0 1 3.10E+04 1.70E+03 3.487E+04 0.224% 90.0 2 5.840E+05 2.390E+05 1.029E+0.10% 90.0 3 8.980E+05 2.090E+05 1.287E+0 8.270% 90.0 4 5.840E+05 1.390E+05 8.425E+05 5.415% 90.0 5 3.10E+04 1.70E+03 3.487E+04 0.224% 90.0 2.90E+04 2.510E+03 3.157E+04 0.203% 112.5 1 1.730E+05 4.930E+04 2.47E+05 1.701% 112.5 2 8.010E+05 1.830E+05 1.141E+0 7.335% 112.5 3 8.90E+05 1.990E+05 1.239E+0 7.94% 112.5 4 3.280E+05 8.400E+04 4.842E+05 3.112% 112.5 5 2.830E+04 2.130E+03 3.22E+04 0.207% 112.5 2.740E+04 2.330E+03 3.173E+04 0.204% 135.0 1 4.010E+05 1.00E+05 5.982E+05 3.844% 135.0 2 8.880E+05 2.040E+05 1.27E+0 8.14% 135.0 3 7.520E+05 1.730E+05 1.074E+0.901% 135.0 4 9.470E+04 4.950E+04 1.88E+05 1.200% 135.0 5 2.710E+04 2.410E+03 3.158E+04 0.203% 135.0 2.900E+04 2.070E+03 3.285E+04 0.211% 157.5 1.850E+05 1.580E+05 9.789E+05.291% 157.5 2 8.910E+05 2.040E+05 1.270E+0 8.15% 157.5 3 4.730E+05 1.330E+05 7.204E+05 4.30% 157.5 4 3.000E+04 2.050E+03 3.381E+04 0.217% 157.5 5 2.700E+04 2.470E+03 3.159E+04 0.203% 157.5 2.980E+04 3.430E+04 9.30E+04 0.02% 180.0 1 8.420E+05 1.920E+05 1.199E+0 7.70% 180.0 2 8.420E+05 1.920E+05 1.199E+0 7.70% 180.0 3 2.510E+05.280E+04 3.78E+05 2.34% 180.0 4 2.780E+04 2.220E+03 3.193E+04 0.205% 180.0 5 2.780E+04 2.220E+03 3.193E+04 0.205% 180.0 2.510E+05.280E+04 3.78E+05 2.34% WGEHDD020-0-R-003-2 32
Environmental Direction Table 5.7 - Mooring Line Loads for Cylinder WEC for Lines at Center Mooring Line No. Static Load at Fairlead Dynamic Load at Fairlead - 2*RMS Total Load Total / Breaking Load [deg] [-] [N] [N] [N] % 90.0 1 2.90E+04 2.510E+04 7.29E+04 0.490% 90.0 2.120E+05 1.30E+05 8.50E+05 5.559% 90.0 3 8.870E+05 2.090E+05 1.27E+0 8.199% 90.0 4.120E+05 1.30E+05 8.50E+05 5.559% 90.0 5 2.90E+04 2.510E+04 7.29E+04 0.490% 90.0 2.880E+04 2.910E+03 3.421E+04 0.220% 112.5 1 2.470E+05 4.570E+04 3.320E+05 2.134% 112.5 2 8.030E+05 1.810E+05 1.140E+0 7.324% 112.5 3 8.710E+05 1.970E+05 1.237E+0 7.953% 112.5 4 4.000E+05 7.990E+04 5.48E+05 3.52% 112.5 5 3.030E+04 2.430E+03 3.482E+04 0.224% 112.5 2.920E+04 2.0E+03 3.415E+04 0.219% 135.0 1 4.730E+05 1.020E+05.27E+05 4.259% 135.0 2 8.900E+05 2.030E+05 1.28E+0 8.14% 135.0 3 7.540E+05 1.710E+05 1.072E+0.890% 135.0 4 7.80E+05 4.750E+05 1.52E+0 10.14% 135.0 5 2.890E+05 2.70E+03 2.941E+05 1.890% 135.0 3.110E+04 2.350E+03 3.547E+04 0.228% 157.5 1.900E+05 1.590E+05 9.857E+05.335% 157.5 2 8.930E+05 2.00E+05 1.27E+0 8.202% 157.5 3 5.410E+05 1.240E+05 7.71E+05 4.959% 157.5 4 3.210E+04 2.300E+03 3.38E+04 0.234% 157.5 5 2.880E+04 2.850E+03 3.410E+04 0.219% 157.5 9.150E+04.080E+04 2.04E+05 1.315% 180.0 1 8.440E+05 1.900E+05 1.197E+0 7.95% 180.0 2 8.440E+05 1.900E+05 1.197E+0 7.95% 180.0 3 3.250E+05 5.800E+04 4.329E+05 2.782% 180.0 4 2.90E+04 2.540E+03 3.432E+04 0.221% 180.0 5 2.90E+04 2.540E+03 3.432E+04 0.221% 180.0 3.250E+05 5.800E+04 4.329E+05 2.782% *. -+/ 4-& ; 3!!; ; D D 0 *8 3 D "!?% ;!' WGEHDD020-0-R-003-2 33
*2(!!+/3& )/ %& Cylinder Shape Mooring Lines at Circumference Mooring Lines at Center WEC Static Total Static Total Ftot [N] 8.83E+05 2.2E+0 8.75E+05 2.1E+0 Fx [N] 0.00E+00 0.00E+00-7.39E+05-2.21E+0 Fy [N] 8.83E+05 2.2E+0 4.7E+05 1.39E+0 Fz [N] 5.24E+03 1.55E+04.0E+03 1.81E+04 Fhor [N] 8.83E+05 2.2E+0 8.74E+05 2.1E+0 angle [deg] 0.3 0.3 0.4 0.4 WGEHDD020-0-R-003-2 34
Mooring Results - Navigational Buoy.. ) 1 ;? 5- ; ( &3 ( % $.//1 0'! -. ; F 3 %$ " ;33;;DD 3;;D3;L4:;M4:;N4: 3;;D3 +" ;DI!!.2# ( 3 1) <$= $JK '! 01 JK ('8 JK * + JK!* JK #J?K 8!&O!' 33J?2 K '**"&O! J?2 K '**"&O! DDJ?2 K! "!&O!' L4:JK!! M4:JK!! N4:JK!! WGEHDD020-0-R-003-2 35
.2 1) <$= GRP Topmark Topmark Support HIPPO 155 Lantern 350mm Radar Reflector Safety Ring Solar Panels Aluminium Daymarks Stainless Steel Battery Box 00 x 00 x 2.5m Superstructure 2 No. Lifting Eyes 3.0mØ Elastomer Hull Galvanised MS. Tail 273Ø x 3.0m Cast Iron Ballast Weights (4 x 75kg) Single Point Mooring Eye : @5- : A %$ +" B B ; 2B" 5- +"' "' WGEHDD020-0-R-003-2 3
.2( 3 1) <$= # # 2 4I! 2 43I!!* 2 4I! & %$ 8! - "(P!Q'% 4*P!Q % ; @B2A ; @A WGEHDD020-0-R-003-2 37
.+ 33 3 #. / M J%2K J%2K J%2K J%22K J%22K J%22K!' &O!'!' &O!' '"&O!' '!!&O!' '!!&O!'!!!!&O!!.$ ( + %$ %$ 8!!? 3.$(! +3 1)! <$=.' (! 4 %$ "' 4 " WGEHDD020-0-R-003-2 38
.$2(! 3 1) <$= JK #J?K 7 J K J%K $?0 4 ') '"!*!&2!' "!&O!8 "!&O!".'2(! +/ 1) <$=8 # % JK -&4JK P @!!;!!;2**!A @!!;!!;2*A 3;;DDI!.* (!! 3 #3 ;5-; Fmax = 1.8 Fsig @*A 1 8!! 3 *('&O! %!&O! %3*'&O!'%3 E $0!E.. -+/?!!?+?0I;$I.I!*? '! (?; WGEHDD020-0-R-003-2 39
7 Anchoring Systems 0 0 ) & ; ; ;4/ 3" ; ;? +/ //2+/ &? ;@$ ; ;A 2 /. D ; 4 @ A 3 : @ A / & &? 3. &/0 0$ )+/) + ; ; ; ; ; 4 @A; B 4 WGEHDD020-0-R-003-2 40
F -&4 ; -&4 D ; D -&4; WGEHDD020-0-R-003-2 41
8 Installation and Removal +/)1! * @ 8G3'' *!A/ ;?D D * ;? & @*!A2?? &? (! 1 -&4 ; ; ; <?; 2 -&4 -&4 ; 2 -?? -&4 0 <?; -&4 $ - / <? -&4? ; WGEHDD020-0-R-003-2 42
B 17 WGEHDD020-0-R-003-2 43
Halcrow Group Limited Ash House Falcon Road Sowton Exeter EX2 7LB Tel +44 (0)1392 444252 Fax +44 (0)1392 444301 www.halcrow.com