Brown & May Marine Ltd


Contents 1.0 Summary ........................................................................................................................................... 1


1.1 Otter Trawl .................................................................................................................................... 1 1.2 Beam Trawl ................................................................................................................................... 1 1.3 Scientific 2-metre Beam Trawl ...................................................................................................... 1


2.0 Introduction ...................................................................................................................................... 2 3.0 Scope of Works ................................................................................................................................. 3 4.0 Methodology ..................................................................................................................................... 5


4.1 Survey Vessel ................................................................................................................................ 5 4.2 Sampling Gear ............................................................................................................................... 6 4.2.1 Commercial Otter Trawl ......................................................................................................... 6 4.2.2 Commercial 4m Beam Trawl .................................................................................................. 7


4.3 Positioning and Navigation ........................................................................................................... 8 4.4 Sampling Operations ..................................................................................................................... 8 4.5 Otter Trawl Sampling .................................................................................................................... 9 4.6 Beam Trawl Sampling .................................................................................................................. 11 4.7 Scientific 2-metre Beam Trawl Sampling .................................................................................... 13


5.0 Otter Trawl Results ......................................................................................................................... 16


5.1 Catch Rates and Species Distribution ......................................................................................... 16 5.2 Length Distributions .................................................................................................................... 22 5.3 Minimum Landing Sizes .............................................................................................................. 24 5.4 Sex Ratios .................................................................................................................................... 25 5.5 Spawning Condition .................................................................................................................... 27


6.0 Beam Trawl Results ......................................................................................................................... 29


6.1 Catch Rates and Species Distribution ......................................................................................... 29 6.2 Length Distributions .................................................................................................................... 34 6.3 Minimum Landing Sizes .............................................................................................................. 35 6.4 Sex Ratios .................................................................................................................................... 37 6.5 Spawning Condition .................................................................................................................... 38


7.0 Scientific 2-metre Beam Trawl Results ........................................................................................... 40


7.1 Fish Catch Rates and Species Distribution .................................................................................. 40 7.2 Length Distributions .................................................................................................................... 44


8.0 Appendix ......................................................................................................................................... 46


8.1 Appendix 1 – Health and Safety .................................................................................................. 46 8.1.1 Personnel ............................................................................................................................. 46 8.1.2 Vessel Induction ................................................................................................................... 46 8.1.3 Daily Safety Checks .............................................................................................................. 46 8.1.4 Post Trip Survey review........................................................................................................ 46


Figures Figure 3.1 Proposed Trawl Locations ...................................................................................................... 4 Figure 4.1 Survey Vessel "Jubilee Spirit" ................................................................................................. 5 Figure 4.2 Otter Trawl Used .................................................................................................................... 6 Figure 4.3 Beam Trawl Used ................................................................................................................... 7


i


Page 1  |  Page 2  |  Page 3  |  Page 4  |  Page 5  |  Page 6  |  Page 7  |  Page 8  |  Page 9  |  Page 10  |  Page 11  |  Page 12  |  Page 13  |  Page 14  |  Page 15  |  Page 16  |  Page 17  |  Page 18  |  Page 19  |  Page 20  |  Page 21  |  Page 22  |  Page 23  |  Page 24  |  Page 25  |  Page 26  |  Page 27  |  Page 28  |  Page 29  |  Page 30  |  Page 31  |  Page 32  |  Page 33  |  Page 34  |  Page 35  |  Page 36  |  Page 37  |  Page 38  |  Page 39  |  Page 40  |  Page 41  |  Page 42  |  Page 43  |  Page 44  |  Page 45  |  Page 46  |  Page 47  |  Page 48  |  Page 49  |  Page 50  |  Page 51  |  Page 52  |  Page 53  |  Page 54  |  Page 55  |  Page 56  |  Page 57  |  Page 58  |  Page 59  |  Page 60  |  Page 61  |  Page 62  |  Page 63  |  Page 64  |  Page 65  |  Page 66  |  Page 67  |  Page 68  |  Page 69  |  Page 70  |  Page 71  |  Page 72  |  Page 73  |  Page 74  |  Page 75  |  Page 76  |  Page 77  |  Page 78  |  Page 79  |  Page 80  |  Page 81  |  Page 82  |  Page 83  |  Page 84  |  Page 85  |  Page 86  |  Page 87  |  Page 88  |  Page 89  |  Page 90  |  Page 91  |  Page 92  |  Page 93  |  Page 94  |  Page 95  |  Page 96  |  Page 97  |  Page 98  |  Page 99  |  Page 100  |  Page 101  |  Page 102  |  Page 103  |  Page 104  |  Page 105  |  Page 106  |  Page 107  |  Page 108  |  Page 109  |  Page 110  |  Page 111  |  Page 112  |  Page 113  |  Page 114  |  Page 115  |  Page 116  |  Page 117  |  Page 118  |  Page 119  |  Page 120  |  Page 121  |  Page 122  |  Page 123  |  Page 124  |  Page 125  |  Page 126  |  Page 127  |  Page 128  |  Page 129  |  Page 130  |  Page 131  |  Page 132  |  Page 133  |  Page 134  |  Page 135  |  Page 136  |  Page 137  |  Page 138  |  Page 139  |  Page 140  |  Page 141  |  Page 142  |  Page 143  |  Page 144  |  Page 145  |  Page 146  |  Page 147  |  Page 148  |  Page 149  |  Page 150  |  Page 151