The term "vessel engaged in fishing" means any vessel fishing with nets, lines, trawls, or other fishing apparatus which restrict maneuverability, but does not include a vessel fishing with trolling lines or other fishing apparatus which do not restrict manageability.
No question, no matter how stupid sounding, is stupid.
See also What is a Sleeping Fish Net?
See also Who is Derek White?
See also What's the point of Sleeping Fish Net?