I've been looking at Google Earth. I calculated that your 11DME point on extended centerline is at -17.0232 145.815.
In nil wind, and assuming 200kts and 15°AoB your turning radius will be about 2.2nm. Double, obviously for the diameter.
Plotting this turn takes you to within 2nm of a 700m peak (read off the local 1:250K topo) - that's 2300'. (look for the rectangular mini housing estate, east of the highway, just north of Gordonvale)
I have made no allowance for wind in the turn, assumed an instantaneous turn at 11DME, and assumed that the outbound track from the DER was straight (and not blown to the right as RWY HDG was kept in a bit long as it was all going bang).
Now I fly planes better than I can design SIDs, but I'm guessing you have flown 8.6nm since the DER [NOT 11nm as that's the VOR which is well to the north of the airport], then another 5nm in the turn.
Maintaining the minimum gradient after takeoff, what height will you be?
I doubt it, but nevertheless, it MIGHT be legal with the buffers and 30kt omnidirectional winds and 6 second pilot turn reaction times (calculating this is beyond my level of expertise) but by christ it ain't smart.
Last edited by compressor stall; 2nd Sep 2016 at 14:21.