CER200103. Celtic Rose 28kHz Furuno Acoustic Data, July 2001. St Patricks Head and St Helens Hill roughy grounds

Collection of acoustic data from 28kHz fisheries sounders using Echolistener digitisers from an industry vessel to provide baseline acoustic data over a month long period during the July roughy spawning event. Trips CER200102 to 06 were located around St Patricks Head and St Helens Hill orange roughy fishing grounds. Addition biological data was collected during these voyages (see Marlin record numbers ....). A continuation of the 1999 acoustic survey of St Helens Hill where Southern Surveyor and the industry vessel Saxon Progress participated in acoustic surveying of orange roughy stocks (see Marlin record number 5545).