I have a lot of time in islanders in Alaska, there is no vmc on islanders it's below the stall speed which if I remember right is 39kts, vx,vy, with one engine or both running is the same 65kts, this airplane at gross weight with one engine at idle make a full takeoff in less than 2000ft , done it for check ride.not to point a finger but this is one of the safest airplanes I know of