"Dynamic RTL" would be automatically returning to my current gps location instead of the original launch point.

I have clients that want me to shoot stills and video of yachts, out in the ocean. I'm doing one tomorrow. I'll be on the yacht and we'll be moving. If I get into trouble (like losing my video feed, or some other issue), I'd like to be able to use RTL on my Nexus tablet running Tower. I figure it would have to be Tower because my radio doesn't have gps.

Can this be done? I can't find any documentation for this feature. I've already used Tower in follow mode so it doesn't seem like a stretch to just have my quad return to my current location.

I haven't seen it (I don't own any DJI products) but apparently, the DJI Inspire has this feature.

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I'm in the same situation as you are and can't find anything. Maybe developers could integrate it on the next update.

Its coming, to allow folks to land on moving boats

Copter-3.3 allows the ground station to set the home position.  So if the GCS (like Tower or whatever) keeps resetting it say every 5 seconds then it would RTL very close to the boat.  I've raised an issue for the Tower guys here.

My first thought was ................ ok, when I'm done with the shots of the boats (or moving POI) and I'm on a moving *tower*, why not switch to the *follow me mode* to keep the copter near to my position (boat) and then land on deck?

Perhaps the new command will be a *RTT* :)  (return to tower)

Looks like I'll be upgrading from APM to Pixhawk soon! =)

1. Being as how RTL is coded to return to certain point, Im sure you could code a secon (Think RTL2 that returns to a different point....but It appears its already being looked at.

2 If you have a quad or other multirotor.....Pixhawk has become a must. Plains are fine with an APM because it doesnt need a whole bunch of intertial code just to keep the the thing level (not counting flying) and that takes up room  and benefits from  faster processors just to keep steady on top of flying.

Well, my mission failed and my client was disappointed. The weather was perfect, there was no wind, and the ocean was beautifully calm. Even so, the gentle rocking of the boat was enough to prevent my quad from arming. I tried several times. No go. 

So, it looks like I'm not the only one who wants "boat mode" or some other solution that will let me launch and fly multiple battery packs from a boat. 

I just started a new thread with all of the information I could find, plus a few of my own ideas here:
http://diydrones.com/group/arducopterusergroup/forum/topics/how-to-...

yea, I usually do brand new accel calibration while still on the ground and than disable pre-arm checks. over the summer I did it on 4 shoot on Tahoe. A bit risky, yes, but that's how it works anyways with DJI controllers. 

If you lose RC link where would it go to when it can't get your current position though?

A valid point but one that needs solving. Launching from a moving platform is very much a requirement these days.

A moving "RTL" after dataloss?

No perfect answer for this situation.  However a moving RTL in this situation might best head for last known location in hope of reaching a closer point where data or manual RC control could be established.  Then update moving RTL location or assume manual control.

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