ANNEX IVDEFINITIONS AND CODING TO BE USED IN THE SUBMISSION OF CATCH DATA
(A)LIST OF FISHING GEAR/FISHING VESSEL CATEGORIES
(from the International Standard Statistical Classification of Fishing Gears (ISSCFG))
Category | Abbreviation |
|---|---|
Trawls | |
Bottom trawls | |
| TBB |
| OTB |
| OTB1 |
| OTB2 |
| PTB |
| TBS |
| TBN |
| TB |
Midwater trawls | |
| OTM |
| OTM1 |
| OTM2 |
| PTM |
| TMS |
| TM |
Twin trawl | OTS |
Otter twin trawls | OTT |
Pair trawls (two vessels) (not specified) | PT |
Otter trawls (not specified) | OT |
Other trawls (not specified) | TX |
Seine nets | |
Beach seines | SB |
Boat or vessel seines | SV |
| SDN |
| SSC |
| SPR |
Seine nets (not specified) | SX |
Surrounding nets | |
With purse lines (purse seine) | PS |
| PS1 |
| PS2 |
Without purse lines (lampara) | LA |
Gillnets and entangling nets | |
Set gillnets (anchored) | GNS |
Drift gillnets | GND |
Encircling gillnets | GNC |
Fixed gillnets (on stakes) | GNF |
Trammel nets | GTR |
Combined gillnet-trammel nets | GTN |
Gillnets and entangling nets (not specified) | GEN |
Gillnets (not specified) | GN |
Hooks and lines | |
Set longlines | LLS |
Drift longlines | LLD |
Longlines (not specified) | LL |
Handlines and polelines (hand-operated) | LHP |
Handlines and polelines (mechanised) | LTM |
Trolling lines | LTL |
Hooks and lines (not specified) | LX |
Traps | |
Stationary uncovered poundnets | FPN |
Covered pots | FPO |
Fyke nets | FYK |
Barriers, fences, weirs, etc. | FWR |
Stownets | FSN |
Aerial nets | FAR |
Traps (not specified) | FIX |
Falling gear | |
Cast nets | FCN |
Falling gear (unspecified) | FG |
Dredges | |
Boat dredge | DRB |
Hand dredge | DRH |
Grappling and wounding | |
Harpoon | HAR |
Lift nets | |
Portable lift nets | LNP |
Boat-operated lift nets | LNB |
Shore-operated stationary lift nets | LNS |
Lift nets (not specified) | LN |
Harvesting machines | |
Pumps | HMP |
Mechanised dredges | HMD |
Harvesting machines (not specified) | HMX |
Miscellaneous gears | MIS |
Gear not known | NK |
(B)DEFINITIONS OF FISHING EFFORT MEASURES FOR GEAR CATEGORIES
Three levels of precisions of fishing effort should be provided, where possible.
Category A
Fishing gear | Effort measure | Definitions |
|---|---|---|
Surrounding nets (purse seines) | Number of sets | Number of times the gear has been set or shot, whether or not a catch was made. This measure is appropriate when shoal size and packing is related to stock abundance or sets are made in a random manner |
Beach seines | Number of sets | Number of times the gear has been set or shot, whether or not a catch was made |
Boat seines | Number of hours fished | Number of times the gear was set or shot times the estimated mean set or shot duration |
Trawls | Number of hours | Number of hours during which the trawl was in the water (midwater trawl) or on the bottom (bottom trawl), and fishing |
Boat dredges | Number of hours fished | Number of hours during which the dredge was on the bottom and fishing |
Gillnets (set or drift) | Number of effort units | Length of nets expressed in 100-metre units multiplied by the number of sets made (= accumulated total length in metres of net used in a given time divided by 100) |
Gillnets (fixed) | Number of effort units | Length of net expressed in 100-metre units multiplied by the number of times the net was cleared |
Traps (uncovered pound nets) | Number of effort units | Number of days fished times the number of units hauled |
Covered pots and fyke nets | Number of effort units | Number of lifts times the number of units (= total number of units fished in a given time period) |
Longlines (set or drift) | Thousands of hooks | Number of hooks fished in a given time period divided by 1 000 |
Handlines (pole, troll, jig, etc.) | Number of line days | Total number of lines used in a given time period |
Harpoons | (Report effort levels B and C only) |
Category B
Numbers of days fished: the number of days on which fishing took place. For those fisheries in which searching is a substantial part of the fishing operation, days in which searching but no fishing took place should be included in ‘days fished’ data.
Category C
For number of days on ground in addition to days fished and searching also all other days while the vessel was on the ground should be included.
Per cent of estimated effort (prorated effort)
Since corresponding effort measures may not be available for the total catch, the percentage of the effort that has been estimated should be indicated. This is calculated from:
(((Total catch) - (Catch for which effort has been recorded)) × 100)/(Total catch)
(C)VESSEL SIZE CATEGORIES
(from the International Standard Statistical Classification of Fishing Vessels (ISSCFV))
Tonnage classes
Gross tonnage category | Code |
|---|---|
0-49,9 | 02 |
50-149,9 | 03 |
150-499,9 | 04 |
500-999,9 | 05 |
1 000-1 999,9 | 06 |
2 000-99 999,9 | 07 |
Not known | 00 |
(D)MAIN SPECIES SOUGHT
This is the species to which the fishing was principally directed. However, it may not correspond with the species which formed the greater part of the catch. The species should be indicated using the 3-alpha identifier (see Annex I).