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... survey areas (i.e. Northwest (NWL), Northeast (NEL), West (WL), Southwest (SWL) & Southeast Lantau (SEL), Deep Bay (DB), Lamma (LM), Po Toi (PT)and Ninepins (NP)) (Figure 1). For each vessel survey, a 15-m inboard vessel (Standard 31516) with an open 13 upper deck (about 4.5 m above water surface) was...

... (Standard 31516) with an open upper deck (about 4.5 m above water surface) was used to make observations from the flying bridge area. Two experienced observers (a data recorder and a primary observer) made up the on-effort survey team, and the survey vessel transited different transect lines at a constant...

... (Standard 31516) with an open upper deck (about 4.5 m above water surface) was used to make observations from the flying bridge area. Two experienced observers (a data recorder and a primary observer) made up the on-effort survey team, and the survey vessel transited different transect lines at a constant...