1. Pukat tunda (demersal
bottom trawl)
The demersal bottom trawl in Brunei Darussalam has two different
types, one for catching fish and another for catching shrimp.
The main difference is the design and the mesh sizes of the
netting used. The fish trawl is about 30 m footrope length
and 26 m head-a-rope length. The cod-end of the net has a
mesh size set to a minimum of 51 mm of square mesh. The fish
trawl net has a higher vertical opening as compared to the
shrimp trawl net. Both types are operated with trawl wooden
or steel doors to maintain its horizontal spread. The trawling
speed ranges from about 3 to 3.5 knots. The trawl fishing
boats are propelled with marine diesel engines with capacities
ranging from 180 to 500 hp. The fishing boats are also equipped
with mechanical drums as shown in figure
10 to facilitate the shooting and hauling of the net.
The boat is also equipped with electronic instruments for
navigation and for searching for suitable fishing grounds.
Figure 30 Tunda
