HF,
FYI, the S-61N FAA Flight Manual Supplement 15 says to do the following during Category A takeoff with an engine failure occurring after the CDP:
Hover at 10 ft. Move engine control levers fully forward to produce at least 103% Nr but not to exceed 106% Nr with matched torques. Rotate not more than 20 degrees nose down and accelerate forward at constant height using up to twin engine takeoff power. As an airspeed indication is achieved, rotate to a 30 kt climbout attitude and readjust collective to attain takeoff power. If an engine fails after the 70 ft height CDP, rotate to not more than 20 degrees nose down and accelerate to Vtoss. During rotation allow Nr to droop to at least 94%, but not less than 91% Nr. Apply collective and cyclic as required to attain a level attitude with 100% Nr and 2-1/2 minute power at Vtoss.
HT