Since I doubt you mean they swim home if need be, can you explain ‘independently’ for those of us not familiar with the MH world.
So, I was answering questions about deck ops on Facebook, and somebody called me an "Attention-W" (I had to look it up) and told me to get a life... but here goes.
Independantly, as discussed in the CONOPs, is the ability of the aircraft to make most tactical decisions itself, instead of relying on the warfare commander or ship. It includes the ability to take other platforms "under control" to prosecute. For the RN Sea King, that went all the way to the observer being a qualified "Freddie" ("shipborne" air controller) to do positive control.
So, for example, instead of the ASW controller saying "helo 1 dip here, helo 2 dip here, etc" they can just say "helo1, take helo 2 and prosecute your descretion."
Obviously, the lines blur, but that's the gist of it. And, it's no surprise the aircraft that can do it, Merlin and Cyclone, have a crew of four and a dedicated battle manager. It's an ACSO in the Cyclone and an RN Observer in the Merlin.
The question then becomes, with increasingly good electronic picture compilation and command and control, is it required for Canada?