SURVEYS OF THE FISH RESOURCES OF NAMIBIA. Preliminary Cruise. Report No 2/94
Part I
Surveys of the hake stocks. 26 April - 31 May 1994
Part II
Surveys of the pelagic stocks. 1 June - 23 June 1994












Table of Contents

CRUISE REPORTS “DR. FRIDTJOF NANSEN”

NORAD - FAO/UNDP GLO 82/001

- IMR, Bergen

The "DR. FRIDTJOF NANSEN" RESEARCH PROGRAMME is sponsored by The Norwegian Agency for Development Cooperation NORAD, The Food and Agriculture Organization of the United Nations FAO, and the United Nations Development Programme UNDP. The programme in Namibia is being conducted and planned under agreements between UNDP, Namibian authorities and the Institute of Marine Research, Norway. Its execution is the responsibility of the Institute of Marine Research in cooperation with the Ministry of Fisheries and Marine Resources of Namibia.

Reports were submitted after the completion of each of Surveys. This cruise report describes the work and some of the findings of survey 1 1993.

© FAO 1994

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Table of Contents

SURVEYS OF THE FISH RESOURCES OF NAMIBIA. Preliminary Cruise. Report No 2/94

Part I. Surveys of the hake stocks. 20 January - 25 February 1993

CHAPTER 1. INTODUCTION

1.1 General objectives
1.2 Objectives of survey 2/1994
1.3 Participation
1.4 Narrative

CHAPTER 2. HYDROGRAPHY

CHAPTER 3. RESULTS OF THE ACOUSTIC AND TRAWL SURVEY

3.1 Discussion of methods
3.2 SOUTHERN REGION, Orange River to St. Francis Bay
3.3 CENTRAL REGION, St. Francis Bay to Ambrose Bay
3.4 NORTHERN REGION, Ambrose Bay to Cunene River

CHAPTER 4. CONSIDERATION OF THE SURVEY RESULTS

Annex I Size composition of main stocks

Annex II The size composition of hake stocks split into length cohorts through optimizing techniques

Annex III Records of fishing stations

Annex IV Instruments and fishing gear used

Annex V Work note on recruitment variations in the Namibian stock of Cape hake

PART II. Surveys of the pelagic stocks. 28 February - 19 March 1993

CHAPTER 1. INTRODUCTION

1.1 Objectives
1.2 Participation
1.3 Schedule

CHAPTER 2. METHODS

2.1 Hydrographic and Plankton Sampling
2.1.1 Hydrographic sampling methods
2.1.2 Plankton sampling methods
2.2 Distribution and Abundance Estimation
2.2.1 Survey area
2.2.2 Sampling methods
2.2.3 Data analysis
2.3 Biological sampling

CHAPTER 3. RESULTS

3.1 Hydrography
3.2 Distribution
3.2.1 Dolphin Head to Ambrose Bay
3.2.2 Ambrose Bay to Cunene River
3.2.3 Cunene River to Tombua
3.3 Abundance
3.4 Biological analysis of fish
3.4.1 Length-frequency
3.4.2 Length-weight
3.4.3 Reproductive status
3.4.4 Condition

CHAPTER 4. CONCLUDING REMARKS

ANNEXES

I Instruments and fishing gear
II Hydrographic profiles
III Summary of trawl stations
IV Records of fishing stations
V Biomass and numbers
VI Length-frequencies of different areas
VII Length-weight relations
VIII Reproductive status
IX Fish condition factor
X Results of intercalibration experiment
XI Additional experiments