South East Fishery Historic Data CSIRO/NSW Trawl Records 
ed. N. Klaer
HMAP Dataset 1 (1918-23), Dataset 2 (1937-43) and Dataset 3 
(1952-57)


The following is draft supporting documentation prepared by Neil Klaer on the 
conversion of these data to AFZIS format. These data have since been 
converted into the HMAP Database format; however the following account is 
still highly informative about the original source material and its conversion to 
electronic form.

HMAP Database, July 2002





South East Fishery Historic Data
CSIRO/NSW Trawl Records
1918-23, 1937-43 and 1952-57

Conversion to AFZIS Format and Summary
N Klaer 13.02.96






Contents

INTRODUCTION	3
DATA FROM 1918-23	4
DATA DESCRIPTION	4
DATA QUALITY	5
CATCH POSITIONS	6
SPECIES IDENTIFICATION	7
TOTAL CATCH BY YEAR AND VESSEL	8
CATCH BY DEPTH	9
CATCH BY YEAR AND SPECIES	9
DATA CONVERSION	9
DATA FROM 1937-43	10
DATA DESCRIPTION	10
DATA QUALITY	11
CATCH POSITIONS	11
SPECIES IDENTIFICATION	13
TOTAL CATCH BY YEAR AND VESSEL	13
CATCH BY DEPTH	14
CATCH BY YEAR AND SPECIES	14
DATA CONVERSION	14
DATA FROM 1951-57	15
DATA DESCRIPTION	15
DATA QUALITY	16
CATCH POSITIONS	16
SPECIES IDENTIFICATION	17
TOTAL CATCH BY YEAR AND VESSEL	17
CATCH BY DEPTH	18
CATCH BY YEAR AND SPECIES	18
DATA CONVERSION	18
APPENDIX 1. FINAL CONVERSION FORMAT	19
REFERENCES	20


Introduction

On the 28th of November 1991, NSW Agriculture and Fisheries provided 
historical South East Fishery (SEF) data to the Bureau of Resource Sciences 
(BRS) in accordance with the Fishing Industry Research and Development 
Corporation (FIRDC)-funded historic SET catch data project. The data were 
originally collected by CSIRO and handed over to NSW fisheries when 
CSIRO ceased work in the 1960s on what was then known as the South East 
Trawl fishery. These data cover the periods 1918-23, 1937-43 and 1952-57. It 
appears that no documentation exists for these data except for a simple 
description of the data field names. This document describes the processing 
carried out, and the assumptions made to convert the data to a format 
suitable for inclusion in the Australian Fishing Zone Information System 
(AFZIS).

Funding for much of this work was provided by FIRDC. Support was also 
provided by BRS and CSIRO, and the data processing described in this 
document was undertaken as part of a Masters project with the University of 
Canberra.  



Data from 1918-23
Data description

The accompanying field description (and only documentation) was as follows:

Table 1. 1918-23 Data description
Field
Width
Position
Type
Comments
trip information
 



vessel name
15
1-15
A
*
year of trip
4
16-19
N

vessel code
2
20-21
N
*
trip number
3
22-24
N

depart date
6
25-30
N
(yymmdd)
depart time
4
31-34
N
(24 hr clock)
return date
6
35-40
N
(yymmdd)
return time
4
41-44
N
(24 hr clock)
No. of hauls
2
45-46
N

No. Of species
2
47-48
N
#
last trip
1
49
N
(blank,0,1) %
species 1
2
50-51
A
*
sp 1 catch
8
52-59
N
(baskets)
species 2
2
60-61
A
*
sp 2 catch
8
62-69
N
(baskets)
.
.
.


.
.
.


species 15
2
190-191
A
*
sp 15 catch
8
192-199
N
(baskets)
haul information




haul No.
2
200-201
N

date
6
202-207
N
(yymmdd)
initial time
4
208-211
N
(24 hr clock)
final time
4
212-215
N
(24 hr clock)
latitude
4
216-219
N
(deg,min)
longitude
4
220-223
N
(deg-100,min)
area
2
224-225
N

initial depth
3
226-228
N
(fathoms)
final depth
3
229-231
N
(fathoms)
edible catch
5
232-236
N
(lbs)
trash catch
5
237-241
N
(lbs)
total catch
5
242-246
N
(lbs)
principal species 1
2
247-248
A
*
principal species 2
2
249-250
A
*
.
.
.


.
.
.


principal species 8
2
261-262
A
*
Notes:	A - Alphabetic
	N - Numeric
	*  - Refer to code lists
	# - No. Of species recorded in species  catch (1) - (15)
	% - 1 denotes last trip for the year
	1 basket = 70lb





A list of vessel codes was provided by NSW Fisheries as shown in Table 2. 
This is for all vessels for which historic data exists, and doesnt apply 
exclusively to 1918-1923.


Table 2. Vessel codes
Vessel
Code
Gunundaal
1
Brolga
2
Koraaga
3
Goonambee
4
Goorangai
5
Dibbiu
6
Dureenbee
7
Alfie Cam
8
Olive Cam
9
Mary Cam
10
Beryl 2
11
Bareamul
12
Samuel Benbow
13
Goolgwai
14
Korowa
15
Maldanna
16
Moona
17
Matong
18
Mulloka
19


Data quality

A total of 12,041 individual haul records were available for the 1918-23 
period. A summary of the completeness of important fields is given in Table 3.

Table 3. Data completeness
Field
Records
% of total
depth fished
12011
99.75
species catch wt
0
0.00
position
5364
44.55
vessel name
12041
100.00
date
12041
100.00
 Note:	- depth applies to initial or final depth
	- position is both latitude and longitude


Catch positions

For hauls where a latitude and longitude was recorded, Figure 1 shows catch 
positions. Positions do not appear to have been recorded with great accuracy.

Figure 1. Catch positions - 1918-23
 



Species identification

Two letter species codes were used in the data. The meaning of the codes 
were not documented, and interpretation was initially provided by Mr Kevin 
Rowling of NSW Fisheries. This interpretation was supplemented with the 
following information from Roughley (1916) on trawler catches off NSW in 
1915 and 1916: 

The total weight of fish captured from the commencement of operations, 7th June, 
1915, till the end of July, 1916, was 2,326,481 lb. The species captured in greatest 
abundance, and arranged in that order, are as follows:--

	1.	Tiger or Deep-sea Flathead (Neoplatycephalus macrodon).
	2.	Sharp-beaked Gurnard (Pterygotriglia polyommata).
	3.	John Dory (Zeus faber).
	4.	Yellow leatherjacket (Pseudomonacanthus ayraudi).
	5.	Short Boarfish (Zanclistius elevatus).
	6.	Nannygai (Trachichthodes affinis).
	7.	Jackass Fish (Dactylosparus macropterus)
	8.	Morwong (Dactylosparus carponemus)
	9.	Barracouta (Thyrsites atun)
	10.	Thetis fish (Neosebastes thetidis)
	11.	Snapper (Pagrosomus auratus)
	12.	Red Gurnard Perch (Helicolenus percoides).

Modern equivalents:	1 = tiger flathead (Neoplatycephalus richardsoni)
			2 = latchet (Pterygotriglia polyommata)
			4 = chinaman leatherjacket (Nelusetta ayraudi)
			5 = long-finned boarfish (Zanclistius elevatus)
			6 = redfish (Centroberyx affinis)
			7  = jackass morwong (Nemadactylus macropterus)
			8 =  blue morwong (Nemadactylus douglasi)
			11 = snapper (Chrysophrys auratus)
			12 = ocean perch (Helicolenus percoides)
			(May and Maxwell (1986) - others as historically listed)


Table 4. Species codes in the 1918-23 data, and assumed identification
Code
Name
CSIRO code
wt (kg)
records
FL
tiger flathead
296001
5,963,684
10,305
LJ
chinaman leatherjacket
465006
2,020,492
5,404
GU
latchet
288006
1,186,948
3,984
SK
skate
31000
252,141
1,484
BA
barracouta
439001
216,160
644
MI
mixed
999999
129,189
592
blank
unknown
0
67,698
675
JD
john dory
264004
47,886
473
MO
jackass morwong
377003
19,372
107
SA
unknown SA
1
13,283
234
NA
redfish
258003
11,574
47
SN
snapper
353001
9,019
72
DO
dory
264000
975
13
PE
ocean perch
287001
893
25
TH
thetis fish
287006
445
2



The code SA was recorded as unknown but may refer to sand flathead. 

There is no specific information on the catch weight by haul of individual 
species. For 3,236 records, the total trip weight by individual species was 
given. This applies to only 27% of all records, and represents an aggregate 
for a number of hauls within a trip. Accordingly, this information was not used.

Enough information was present, however, to determine approximate catch 
weights for individual species by haul. The fields shown in Table 1 called 
principal species 1 - 8 give the species code in weight order of the catch by 
individual species code for each haul. Particularly in past times, records for 
species which were not retained have not been kept in detail. The species 
code list for these data given in Table 4 also indicates that records have only 
been kept in this data set for edible species. It is therefore likely that the 
information on principal species refers to the retained catch. Assuming this, 
and that the catch of principal species 1 is twice that of principal species 2 
which is twice that of 3 etc. allows the calculation of individual species catch 
weights (also given in Table 4). 

It was noted that the average catch per haul is high for this data set (>1000 kg 
per haul) in comparison with later steam trawler catch rates (approximately 
300 kg per haul). This may be due to incorrect conversion of catch weight 
from the original records. The original records are reported to no longer exist, 
so checking is probably impossible. A common feature of  many developing 
fisheries is high catch rates initially, so the data may also be correct. 

Total catch by year and vessel

Table 5. Total retained catch and number of hauls by year
Year
Total Catch (kg)
Hauls
1918
2,633,491
1,759
1919
4,646,646
2,324
1920
2,925,533
1,110
1921
6,080,484
2,769
1922
8,507,776
3,587
1923
1,225,367
7,492

Total catch and number of hauls by vessel for the 1918-23 data is given in 
Table 6. 

Table 6. Catch and number of hauls by vessel
Vessel
Retained wt (kg)
Discard wt (kg)
Hauls
Brolga
2,520,637
470,800
2,660
Dibbiu
1,246,122
272,459
1,554
Dureenbee
584,111
58,878
688
Goonambee
1,392,307
329,855
1,574
Goorangai
1,190,492
380,481
1,437
Gunundaal
1,100,573
65,214
1,911
Koraaga
1,905,516
309,609
2,217




Catch by depth

Total catches by depth interval (0=0-20) are given in Table 7. Depths have 
been converted from fathoms to metres. A small number of hauls (17) had a 
recorded depth of greater than 600m. It was assumed in this case that the 
depth was recorded in feet instead of fathoms, and the recorded depth was 
converted accordingly. The absence of catches in depths between 200 and 
600m supported this assumption.

Table 6. Total retained and discarded catch weight by depth interval
Depth
Retained wt (kg)
Discard wt (kg)
Hauls
0
4,659
1,444
9
20
3,852
1,179
6
40
802,340
157,597
906
60
3,505,460
666,309
3,309
80
1,697,237
253,383
2,308
100
2,686,399
485,909
3,847
120
1,146,112
295,946
1,549
140
39,223
7,033
59
160
4,854
1,360
6
180
6,168
1,361
9
200
816
16
1


Catch by year and species

Table 7. Total retained catch by species by year
Code
Species
1918
1919
1920
1921
1922
1923

unknown
4,264
14,605
2,603
10,261
32,201
3,764
BA
barracouta
28,188
93,656
10,383
44,722
38,735
476
DO
dory
159
816
0
0
0
0
FL
tiger flathead
578,315
992,030
485,606
1,483,128
2,113,319
311,286
GU
latchet
192,494
337,118
192,128
228,569
215,015
21,624
JD
john dory
20,381
11,827
8,334
7,119
225
0
LJ
chinaman leatherjacket
103,416
282,033
375,329
472,844
682,457
104,413
MI
mixed
4,642
2,954
23,582
45,691
51,056
1,264
MO
jackass morwong
14,431
0
992
3,493
456
0
NA
redfish
1,084
2,409
3,800
2,481
1,800
0
PE
ocean perch
893
0
0
0
0
0
SA
unknown
5,406
5,831
2,046
0
0
0
SK
rays
58,652
118,863
28,970
27,918
17,581
157
SN
snapper
1,465
1,595
4,416
204
1,339
0
TH
thetis fish
0
0
0
445
0
0


Data conversion

The data was converted to the format described in Appendix 1.





Data from 1937-43
Data description

The accompanying field description was as follows:

Table 8. 1937-43 Data description
Field
Width
Positio
n
Type
Comments
trip information
 



vessel-year
24
1-24
A
*
vessel code
2
25-26
N
 
trip number
3
27-29
N

depart date
6
30-35
N
(yymmdd)
depart time
4
36-39
N
(24 hr clock)
return date
6
40-45
N
(yymmdd)
return time
4
46-49
N
(24 hr clock)
No. of hauls
2
50-51
N

No. Of species
2
52-53
N
#
last trip
1
54
N
(blank,0,1) %
species 1
2
55-56
N
*
sp 1 catch
8
57-64
N
(baskets)
species 2
2
65-66
N
*
sp 2 catch
8
67-74
N
(baskets)
.
.
.


.
.
.


species 12
2
165-166
N
*
sp 12 catch
8
167-174
N
(baskets)
haul information




haul No.
2
175-176
N

date
6
177-182
N
(yymmdd)
initial time
4
183-186
N
(24 hr clock)
final time
4
187-190
N
(24 hr clock)
area name
6
191-196
N
 
area code
2
197-198
A
 
initial depth
3
199-201
N
(fathoms)
final depth
3
202-204
N
(fathoms)
species 1 
2
205-206
N
*
species 1 catch
6
207-212
N
(baskets)
.
.
.


species 8
2
261-262
N
*
species 8 catch
6
263-268
N
(baskets)
Notes:	A - Alphabetic
	N - Numeric
	*  - Refer to code lists
	# - No. Of species recorded in species  catch (1) - (12)
	% - 1 denotes last trip for the year
	1 basket = 70lb



Data quality

A total of 31,266 individual haul records were available for the 1937-43 period. A 
summary of the completeness of important fields is given in Table 9.

Table 9. Data completeness 1937-43
Field
Records
% of total
depth fished
13,634
43.61
species catch wt
31,266
100.00
position 
0
0.00
vessel name
31,266
100.00
date
31,266
100.00
Note:	- depth applies to initial or final depth
	- position is both latitude and longitude
	- 100% of records had an encoded fishing ground
Catch positions

No hauls had latitude or longitude recorded. A six character fishing ground code was 
given, and these were interpreted as shown in Table 10 (some found by reference to 
Colefax, 1934). Estimates of the geographic location of the position on the coast, 
and  the 200 and 1000m isobaths are shown in the table for those grounds which 
could be identified. A small number of codes could not be interpreted. Actual catch 
positions were estimated by interpolation according to the depth fished (mean start 
and end depth). Where no depth was given, 100m was used. Figure 2 shows a map 
of the resulting estimated catch positions.

Figure 2. Estimated catch positions - 1937-43
 
Table 10. Fishing ground codes and assumed locations
Code
Ground
Lat 0m
Long 0m
Lat 200m
Long 200m
Lat 1000m
Long 1000m
BABEL
Babel Is
3957
14820
3957
14852
3957
14858
BASSPT
Bass Point
3436
15047
3436
15111
3436
15120
BATE
Batemans Bay
3544
15015
3544
15050
3544
15056
BERMAG
Bermagui
3626
15004
3626
15015
3626
15020
BIRD
Bird Is
3314
15136
3314
15214
3314
15224
BOTANY
Botany Bay
3400
15114
3400
15133
3400
15151
BRGHTN
Broughton Is
3237
15219
3237
15240
3237
15251
BROKEN
Broken Bay
3336
15119
3336
15152
3336
15208
BRRNJY
Barrenjoey Pt
3335
15120
3335
15154
3335
15208
BRUSH
Brush Is
3532
15025
3532
15043
3532
15047
CATHRN
Catherine Hill Bay
3309
15138
3309
15217
3309
15229
CHRLTT
Charlott Hd
3220
15233
3220
15254
3220
15301
CLCLFF
Coalcliff
3415
15059
3415
15124
3415
15135
CPFRST
Cape Forster
3211
15231
3211
15254
3211
15305
CPGREN
Cape Grenfell
3454
15036
3454
15103
3454
15111
CPHOWE
Cape Howe
3730
14959
3730
15014
3730
15018
CPHWKE
Cape Hawke
3213
15234
3213
15256
3213
15305
CPSMKY
Smoky Cape
3055
15305
3055
15312
3055
15319
CRNLLA
Cronulla
3402
15111
3402
15135
3402
15152
CROWDY
Crowdy Hd
3151
15245
3151
15303
3151
15319
DSASTR
Disaster Bay
3716
14958
3716
15017
3716
15021
EDEN
Eden
3704
14955
3704
15017
3704
15021
EVRARD
Cape Everard
3748
14916
3807
14922
3820
14926
GABO
Gabo Is
3734
14955
3734
15013
3734
15018
GOALEN
Goalen
3631
15003
3631
15020
3631
15025
HAYSTK
Haystack Rock
4212
14804
4212
14832
4212
14837
HCKING
Port Hacking
3404
15106
3404
15131
3404
15149
HELENS
St Helens
4120
14815
4120
14837
4120
14848
JERVIS
Jervis Bay
3507
15046
3507
15058
3507
15106
KEMBLA
Port Kembla
3429
15055
3429
15116
3429
15126
KIAMA
Kiama
3440
15051
3440
15110
3440
15120
KRGORO
Korogoro Is
3103
15302
3103
15312
3103
15319
LAKENT
Lakes Entrance
3752
14800
3820
14831
3829
14844
LILVAL
Lily Vale
3412
15100
3412
15124
3412
15137
LONGPT
Long Point
3345
15115
3345
15145
3345
15205
MARIA
Maria Is
4240
14808
4240
14824
4240
14831
MARION
Marion Bay
4248
14800
4248
14821
4248
14827
MARLEY
Marley Beach
3407
15108
3407
15127
3407
15142
MCQRIE
Port Macquarie
3127
15255
3127
15308
3127
15315
MONTAG
Montague Is
3615
15014
3615
15018
3615
15023
MOON
Moon Bay
3642
14959
3642
15016
3642
15021
MORNA
Unknown
0
0
0
0
0
0
MORUYA
Moruya
3555
15008
3555
15028
3555
15031
MOWRRY
Mowarry Pt
3709
15000
3709
15017
3709
15021
MRMBLA
Merimbula
3654
14956
3654
15016
3654
15020
NORAH
Norah Hd
3317
15135
3317
15211
3317
15219
NWCSTL
Newcastle
3256
15146
3256
15233
3256
15239
NWZLND
New Zealand Ground
3343
15126
3338
15152
3334
15208
OHARA
O'Hara Hd
3534
15023
3534
15041
3534
15045
PINES
The Pines
3601
15009
3601
15024
3601
15028
RED HD
Red Hd
3515
15033
3515
15054
3515
15100
SHLHVN
Shoalhaven Hd
3451
15045
3451
15106
3451
15113
SISTER
The Sisters
3930
14744
3912
14837
3908
14844
STPHNS
Port Stephens
3242
15210
3242
15241
3242
15250
SYDHDS
Sydney Hd
3351
15118
3351
15142
3351
15205
TATHRA
Tathra
3644
14959
3644
15016
3644
15020
TLLGTS
Tollgate Is
3545
15016
3545
15034
3545
15038
TNCRRY
Tuncurry
3211
15230
3211
15256
3211
15305
WABUNG
Wybung Head
3312
15140
3312
15214
3312
15224
WARDEN
Warden
3523
15030
3523
15047
3523
15053
WATMOL
Wattamolla
3408
15108
3408
15128
3408
15143
WRECK
Wreck Bay
3511
15038
3511
15055
3511
15103

Species identification

Two letter species codes were used in the data, and were interpreted in the 
same way as described for the 1918-23 data.

Table 11. Species codes in the 1937-43 data, and assumed identification

Code
Name
CSIRO code
wt (kg)
records
FL
tiger flathead
296001
6,033,406
30,318
MI
mixed
999999
2,033,521
13,229
MO
jackass morwong
377003
928,455
5,442
LJ
chinaman leatherjacket
465006
499,216
3,701
NA
redfish
258003
431,481
1,600
GU
latchet
288006
199,339
2,492
SH
shark
18000
114,240
1,049
JD
john dory
264004
107,522
1,671
SA
unknown
1
51,127
941
SN
snapper
353001
14,767
35
LA
latchet
288006
13,705
334
DO
dory
264000
4,978
88
KG
kingfish
337006
1,461
4
SK
rays
31000
1,296
34
PE
ocean perch
287001
222
1
RA
rays
31000
64
2

Total catch by year and vessel

Table 12. Total retained catch and number of hauls by year
Year
Total Catch (kg)
Hauls
37
1,950,643
6,476
38
3,055,925
9,222
39
3,066,765
9,337
40
730,804
2,192
41
878,350
2,416
42
617,398
1,396
43
128,428
227

Total catch and number of hauls by vessel for the 1937-43 data is given in 
Table 13.  Discarded catch was not recorded.

Table 13. Catch and number of hauls by vessel
Vessel
Retained wt
Discard wt
Operations
Alfie Cam
888,574
0
2,928
Bareamul
1,892,268
0
4,804
Beryl 2
828,382
0
2,577
Dureenbee
1,498,070
0
4,738
Goolgwai
521,114
0
1,589
Goonambee
1,026,538
0
3,189
Goorangai
847,519
0
2,709
Korowa
530,306
0
1,515
Mary Cam
1,457,932
0
4,300
Olive Cam
816,626
0
2,547
Samuel Benbow
120,984
0
370


Catch by depth

Total catches by depth interval (0=0-20) are given in Table 14. Depths have 
been converted from fathoms to metres. All recorded depths were within the 
ranges shown and no adjustments for mis-recording were made.

Table 14. Total retained catch weight by depth interval
Depth (m)
Retained wt (kg)
Discard wt (kg)
Hauls
0
826
0
3
20
1,937
0
6
40
57,084
0
213
60
187,007
0
756
80
714,170
0
2,465
100
905,706
0
2,883
120
1,468,218
0
4,106
140
970,727
0
2,572
160
85,727
0
251
180
50,733
0
181
200
40,584
0
182
220
2,572
0
10
240
159
0
1

Catch by year and species

Table 15. Total retained catch by species by year
Code
Species
1937
1938
1939
1940
1941
1942
1943
DO
dory
0
1,435
0
480
1,311
1,752
0
FL
tiger flathead
1,132,089
1,942,816
1,952,715
410,179
348,055
186,122
61,430
GU
latchet
32
76,900
48,766
19,437
29,670
20,481
4,053
JD
john dory
9,817
27,347
21,943
14,946
21,538
8,644
3,287
KG
kingfish
0
0
0
0
223
1,238
0
LA
latchet
0
2,855
7,046
2,412
112
416
864
LJ
chinaman leatherjacket
2,574
54,762
160,777
67,494
96,066
92,371
25,172
MI
mixed
553,751
582,461
520,140
144,368
159,410
72,529
862
MO
jackass morwong
209,782
322,307
249,183
35,861
82,573
28,398
351
NA
redfish
43,514
40,287
75,653
21,753
118,086
129,925
2,263
PE
ocean perch
0
0
0
0
0
222
0
RA
rays
0
64
0
0
0
0
0
SA
unknown SA
0
5,828
16,989
13,742
11,673
2,895
0
SH
shark
0
320
0
574
10,150
72,937
30,259
SK
rays
0
256
656
96
288
0
0
SN
snapper
0
0
14,767
0
0
0
0

Data conversion

The data was converted to the format described in Appendix 1.



Data from 1951-57
Data description

The accompanying field description was as follows:

Table 16. 1951-57 Data description
Field
Width
Positio
n
Type
Comments
trip information
 



vessel-year
24
1-24
A
*
vessel code
2
25-26
N
 
trip number
3
27-29
N

depart date
6
30-35
N
(yymmdd)
depart time
4
36-39
N
(24 hr clock)
return date
6
40-45
N
(yymmdd)
return time
4
46-49
N
(24 hr clock)
No. of hauls
2
50-51
N

No. Of species
2
52-53
N
#
last trip
1
54
N
(blank,0,1) %
species 1
2
55-56
N
*
sp 1 catch
8
57-64
N
(baskets)
species 2
2
65-66
N
*
sp 2 catch
8
67-74
N
(baskets)
.
.
.


.
.
.


species 10
2
145-146
N
*
sp 10 catch
8
147-154
N
(baskets)
haul information




haul No.
2
155-156
N

date
6
157-162
N
(yymmdd)
initial time
4
163-166
N
(24 hr clock)
final time
4
167-170
N
(24 hr clock)
area name
6
171-176
N
 
area code
2
177-178
A
 
initial depth
3
179-181
N
(fathoms)
final depth
3
182-184
N
(fathoms)
species 1 
2
185-186
N
*
species 1 catch
6
187-192
N
(baskets)
.
.
.


species 8
2
241-242
N
*
species 8 catch
6
243-248
N
(baskets)
Notes:	A - Alphabetic
	N - Numeric
	*  - Refer to code lists
	# - No. Of species recorded in species  catch (1) - (10)
	% - 1 denotes last trip for the year
	1 basket = 70lb


Data quality

A total of 21,120 individual haul records were available for the 1951-57 period. A 
summary of the completeness of important fields is given in Table 17.

Table 17. Data completeness 1951-57
Field
Records
% of total
depth fished
19,345
91.60
species catch wt
21,120
100.00
position
0
0.00
vessel name
21,120
100.00
date
21,120
100.00
Note:	- depth applies to initial or final depth
	- position is both latitude and longitude
	- 100% of records had an encoded fishing ground

Catch positions

No hauls had latitude or longitude recorded. The six character fishing ground code 
was converted to estimated catch positions as described for the 1937-43. Figure 3 
shows a map of the resulting estimated catch positions.

Figure 3. Estimated catch positions - 1951-57
 


Species identification

Two letter species codes were used in the data, and were interpreted in the 
same way as described for the 1918-23 data. 

Table 18. Species codes in the 1951-57 data, and assumed identification
Code
Name
CSIRO code
wt (kg)
records
DO
dory
264000
27,890
309
FL
tiger flathead
296001
1,118,890
13,672
GU
latchet
288006
77,380
890
JD
john dory
264004
21,470
415
JW
jewfish
354001
3,496
15
LA
latchet
288006
4,009
31
LJ
chinaman leatherjacket
465006
206,651
1,110
MA
mackerel
337002
6,097
6
MI
mixed
999999
699,981
9,124
MO
jackass morwong
377003
2,863,055
15,483
NA
redfish
258003
1,135,721
5,460
RA
rays
31000
160,826
1,818
SA
unknown SA
1
735
17
SD
silver dory
264002
2,605
13
SH
shark
18000
406,775
5,913
SN
snapper
353001
17,175
360

Total catch by year and vessel

Table 19. Total retained catch and number of hauls by year
Year
Total Catch (kg)
Hauls
51
2,128
6
52
1,259,720
3,309
53
1,427,085
4,701
54
1,091,219
3,398
55
1,117,610
3,282
56
1,000,446
3,328
57
845,776
3,096

Total catch and number of hauls by vessel for the 1951-57 data is given in 
Table 20.  Discarded catch was not recorded.

Table 20. Catch and number of hauls by vessel
Vessel
Retained wt
Discard wt
Operations
Alfie Cam
39,192
0
131
Goolgwai
410,235
0
1,380
Korowa
691,860
0
2,026
Maldanna
1,716,452
0
4,910
Mary Cam
44,883
0
171
Matong
1,634,927
0
4,934
Moona
1,464,698
0
5,197
Mulloka
741,737
0
2,371


Catch by depth

Total catches by depth interval (0=0-20) are given in Table 21. Depths have 
been converted from fathoms to metres. All recorded depths were within the 
ranges shown and no adjustments for mis-recording were made.

Table 21. Total retained catch weight by depth interval
Depth (m)
Retained wt (kg)
Discard wt (kg)
Hauls
40
4,671
0
22
60
280,297
0
992
80
700,832
0
2,316
100
1,025,131
0
3,157
120
2,426,664
0
7,610
140
1,618,564
0
4,908
160
98,845
0
279
180
11,278
0
40
200
6,416
0
20
220
572
0
1

Catch by year and species

Table 22. Total retained catch by species by year
Code
Species
1951
1952
1953
1954
1955
1956
1957
DO
dory
0
192
1,306
16,404
9,988
0
0
FL
tiger flathead
1,398
299,378
239,326
193,149
150,900
155,555
79,184
GU
latchet
0
19,749
10,439
4,650
10,240
11,917
20,385
JD
john dory
0
8,610
5,295
2,268
2,043
1,464
1,790
JW
jewfish
0
0
0
0
0
2,732
764
LA
latchet
0
672
3,337
0
0
0
0
LJ
chinaman leatherjacket
0
80,614
43,271
13,199
22,826
31,387
15,354
MA
mackerel
0
6,097
0
0
0
0
0
MI
mixed
160
150,782
149,603
97,434
90,045
110,132
101,825
MO
jackass morwong
478
398,859
497,891
481,549
562,068
489,696
432,514
NA
redfish
0
180,896
348,210
207,601
179,204
114,507
105,303
RA
rays
0
17,775
47,601
35,834
32,651
19,270
7,695
SA
unknown sa
0
0
735
0
0
0
0
SD
silver dory
0
2,605
0
0
0
0
0
SH
shark
96
93,230
80,013
39,814
54,966
61,085
77,571
SN
snapper
0
1,727
1,912
669
4,121
4,111
4,635

Data conversion

The data was converted to the format described in Appendix 1.


Appendix 1. Final conversion format

All data were converted into the following format. This is suitable for loading 
into the AFZIS system without the need for further data manipulation. The 
files are currently in dBase III databases, but they can easily be converted to 
text tables or delimited ASCII files as required. 

Structure for database: E:ops.dbf
Number of data records:   12041
Date of last update   : 06/22/94

Field  Field Name  Type       Width    Dec
    1  BOAT_NAME   Character     15
    2  DATE        Numeric        6
    3  HAUL_NO     Numeric        2
    4  OP_NO       Numeric        2
    5  ST_TIME     Numeric        4
    6  EN_TIME     Numeric        4
    7  ST_DEP      Numeric        4
    8  EN_DEP      Numeric        4
    9  LAT         Numeric        6      2
   10  LONG        Numeric        6      2
   11  EFFORT      Numeric        6      2
   12  RET_WT      Numeric        8
   13  DIS_WT      Numeric        8
   14  TOT_WT      Numeric        8
** Total **                      84


Structure for database: E:sp.dbf
Number of data records:   24061
Date of last update   : 06/22/94

Field  Field Name  Type       Width    Dec
    1  BOAT_NAME   Character     15
    2  DATE        Numeric        6
    3  HAUL_NO     Numeric        2
    4  OP_NO       Numeric        2
    5  SPECIES     Character      2
    6  SP_CODE     Numeric        6
    7  WT          Numeric        8
** Total **                      42


References

Colefax, A.N. 1934. A preliminary investigation of the natural history of the 
tiger flathead (Neoplatycephalus macrodon) on the south-eastern Australian 
coast. I. Proc. Linn. Soc. NSW. 59, 71-79.

May, J.L. and Maxwell, J.G.H. 1986. Field guide to Trawl Fish from 
Temperate Waters of Australia. CSIRO Division of Fisheries Research. 492p.

Roughly, T.C. 1916. Fishes of Australia and Their Technology. William 
Applegate Gullick, Government Printer, Sydney. 296p.



 
SEF Historic data CSIRO/NSW  (DRAFT)                                                                                     Page 15
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