Purse seine rail rollers speed up tuna brailing. Hydraulically driven, rubberized rail rollers have been used on Japanese group seiners for decades. The entire side of some vessels are equipped with these rollers which greatly speed the process of drying the net (sacking up) prior to brailing (Figure 3).
Figure 1. Note rail roller on port side of working deck below the gangway
On some vessels, swivelling pinch haulers assist the process by hauling sections of webbing to keep the net even during the drying process (Figure 2). On group seiners, the catch does not have to be completely dried up before brailing so the rail rollers can handle most of the process very quickly and efficiently.
Figure 2. Sacking up with rail roller and pinch hauler on Japanese group seiner
Figure 3. Long rail roller on Japanese group seiner.
European Union single seiners have been using rail rollers for several years to speed up the sacking up process. Currently, almost all modern seiners of the French and Spanish fleets are so equipped (Figure 1). Rail rollers are an essential component to ‘Spanish style’ brailing, described in post; Purse seine fish loading system, brailing tuna
May 9th, 2010
molitva leyli 


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