In situ target strength observations on haddock
MetadataShow full item record
Original versionThis report is not to be cited without prior reference to the authors
In situ target strength measurements of ideally resolved haddock have been made using the ES-400 split-beam echo sounder. The measurements are compared with the mean target strength obtained simultaneously by counting / integration. Within the estimated confidence limits of the observation volume in the counting method the two estimates of mean target strength agreed, both being about 4 dB above the currently applied mean target strength of gadoids.