7. IMPLEMENTATION

The implementation of the project will be controlled by several important factors:

-   the seasonal availability of fish stocks

-   the potential for the site to be developed

-   the availability of skilled staff

As Fig. 16 shows, the timing of these becomes critical, if the project is to achieve early viability and gain the opportunity for rapid development to a significant production scale.

Concerning the early development, Fig. 17 identifies the most critical activities which must be carried out to ensure effective operation during 1987, which is the earliest time in which a crop of fish could be introduced and grown on. In practical terms, it will be better to assume the import of initial stocks of eggs or fry; possibly also of tilapia, which might be obtainable throughout 1987. On this basis, the first marketable crops would be available from mid-1988 onwards, possibly slightly earlier if tilapia are used. It is difficult to define at this stage the potential production levels during the. early operational period; this would depend greatly on the availability and survival of initial stock. An initial production of at least 5 t would however be reasonable, and production up to the target 50 t may be obtainable under favourable conditions. Once fry supplies have been established, skilled staff become available, and routine production methods defined for local conditions, production could develop rapidly.

The early implementation of the present project by the local UNDP office, together with the valuable local initiatives, have done much to prepare the project for prompt initial physical development, and preliminary discussions have been carried out with a Locally based construction firm (MEMCO) who have indicated their ability to carry out the initial work within the approximate time scale. Initial quotations have been received and subject to normal verification, negotiation, tender and contract management, the company appears to be able to offer the necessary resources for a rapid and effective realization of Phase I of the project.

Details of proposed staff development and training programme are given in Appendix 4 and summarized in Table 13. There is some conflict between the need to train staff, particularly overseas, and the need to have capable staff immediately and directly involved in early production. The cycling of staff from project work to off-site training will have to be done carefully to avoid leaving the site under-resourced.

In order to achieve rapid and effective physical facilities, specialist design and construction management input, commissioning, supervision of initial production and provision of local training, it will be necessary to allow for assistance from outside aquaculture specialists, particularly during the first year of the project. This can be provided through specific consultancies, through a commercial management contract or with a combination of these. Table 14 outlines the type and timing of inputs likely to be required.

In the immediate term there are several specific actions which must be taken by the various parties concerned with the project; these are summarized in Table 15. It will be particularly important for the design and construction phase to confirm whether local current documents do coincide with the general current drift of the area.

FIGURE 1. Out Line Development Timetable; Marine Aquaculture

FIGURE 2: Zawia Quarry site

Figure 3. Proposed layout of Zawia Aquaculture Project

Figure 4. Production cycles

Graphs illustrating expected average individual growth of sea bass in Zawia site (above) and corresponding total fish biomass (below)

Figure 5. Hatchery - Feeding Programme

Figure 6. Metabolic requirements of stock

Graphs illustrating water flow requirement for each kg of fish (above) and total water flow needed (below) in zawia farm (harvesting from August to December)

Figure 7. Harvesting programmes

TWO HARVESTING PROGRAMMES

Harvesting fish only over 300 g (above) and fish from 250 to 300 g average size (below)

Figure 8. Hatchery layout

Figure 9. Offices/Services Building Layout

NOTES

1. If the project is going to develop in phase 2 and become a long term training centre, it will need at least a further building for:

   -   rooms and services for guests and trainees

   -   a larger kitchen + restaurant for personnel guest and trainees

   -   a conference - library room

   This building could be established on the flat area at the left of the entrance road of the farm, next to which could be sited visitor car parking facilities.

2. Depending on the foundation levels finally chosen, the option could be made of constructing the present office/services building in two floors, in which case part of the upper/lower will provide management offices from which the entire site can be viewed. The entrance space created will also provide for initial space for trainees, seminar room, etc.

FIGURE 10. Water Distribution

Figure 11. High quality water supply

HATCHERY WATER SYSTEMS

	SEAWATER
	Maximum waterflows
	1.	Larv make-up water :	40 1/min
	2.	Nurs. make-up water:	120 1/m
	3.	Phyto-zooplancton:	100 1/m
	4.	Spawning tanks.	150 1/m
	5.	Occasional needs.	100 1/m
		Total:	510 1/m
	6.	Nursery flowthrough:	12 00 l/m

FIGURE 12. Pumping Station

Note:   A concrete pipe may be used instead of an inlet channel

The pump well is cut into the rock ledge at the shore, then opened out seawards.

Figure 13. Recycle system

	LARVAL TANKS
	Recirculating system
	Maximum waterflws:
	tank: 2 m3/h = 33 1/min
	total: 24 m3/h = 400 1/min
	NURSERY TANKS
	Recirculating system
	Maximum waterflows
	tank 9 m3/h = 150 I/mm
	total 72 m3/h = 1200 I/mm
	Waste Water

Figure 14. Aeration

HATCHERY : MR DISTRIBUTION

FIGURE 15. POWER SUPPLIES:

Figure 16. Power supply

Timing phase 1

Timing Phase 2

Figure 17. Outline ‘Critical Paths’: Site Development, Zawia

TABLE 1: Summary.of Environmental Factors

TABLE 2: Production Patterns - Seabass Stock

TABLE 3: Stock Patterns - Use of Facilities

TABLE 4: Water Distribution - Summary of Requirements

TABLE 5: Dimensions of Pump Systems

TABLE 6: Summary - Hatchery Recycle System

TABLE 7: Hatchery tanks

FG: Fibreglass

A + PVC: Aluminium support + PVC sheet

TABLE 8: Summary of heating requirements

TABLE-9: Aeration System

TABLE 10: Approximate power requirements

TABLE 11: Other Services and Equipment

TABLE 12:

OUTLINE CAPITAL COSTS (In Libyan Dinars)

TABLE 13: Summary of Staff Development

TABLE 14:

SUMMARY OF SUGGESTED AQUACULTURE SPECIALISTS INTERVENTIONS

TABLE 15:

SUMMARY OF SPECIFIC ACTIONS FOR INITIAL IMPLEMENTATION