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roy-lowry avatar roy-lowry commented on July 4, 2024 1

No restriction to vertical beams through the use of the word 'echosounder' was intended when this was set up. Many multi-beam echosounders - the instruments with which I was most familiar - have beams set in multiple directions so a directional semantic never entered my mind. If others do see a directional association then I've no problem with the changes proposed, although 'Acoustic fish finders' might be a little more elegant.
I have encountered the term 'fish-finder echosounder' in common usage so it might be an idea to have that phrase in the definition (something like 'Includes fish-finder echosounders') so any searches for it still work.
I think the protocol of running changes to L05 past the SeaDataNet tech mailing list is still in force, although I've never noticed much in the way of responses these days. Check with Gwen.

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JordanAthertonNOC avatar JordanAthertonNOC commented on July 4, 2024

Present suggestion is to amend the preflabel from fish-finder echosounders to either acoustic fish finders or fish-finder acoustic instruments, in addition to amending the description to include the terms sonars and fish-finder echosounders to ensure discoverability.

Awaiting further input from any interested parties in the wider community.

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gavinmacaulay avatar gavinmacaulay commented on July 4, 2024

Some comments from a user of echosounders for fisheries research:

  1. I agree with @roy-lowry that echosounder, as commonly used today, doesn't imply vertical directionality - where clarity is needed the directionality is often included (e.g., vertically-oriented echosounder, horizontally-oriented echosounder)

  2. acoustic instruments is a very general label (more general than sonar) that is too broad in this case.

  3. The fish-finder label is very much associated with recreational fishing and it not commonly used in commercial fishing or fisheries research. But I see that fish-finder is used to distinguish from other types of echosounder (e.g., single- and multi-beam echosounders) - biological echosounder would be more a more accurate label but it's not a term that I've seen used at all and fish-finder at least has some historical meaning.

  4. Not having been aware of this vocabulary until now, I looked at the definition and suggest something like the following to better reflect the use of fish-finder echosounders for more than just detecting fish shoals: Sonar instruments primarily designed to detect aquatic organisms through directed transmission and reception of acoustic signals. They often utilise multiple frequencies.

In summary, I support retaining fish-finder echosounder and modifying the definition as above.

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roy-lowry avatar roy-lowry commented on July 4, 2024

I am comfortable with Gavin's recommendation.

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JordanAthertonNOC avatar JordanAthertonNOC commented on July 4, 2024

Hi @gavinmacaulay, thank you for your valuable input, we are happy to take forward your suggestion - the description for FFES has been amended accordingly and this update should be live after ~07:00 GMT tomorrow.

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