I didn't seen crash report on that Russian Mi-14 so will not go to why it happened.
But:
Sea King is a lightweight helicopter, compared to Haze. Haze is more than twice as heavy while empty, with only around 18% more power. It can not take off on one engine. Not from water, not from airstrip.
Actually you can't maintain altitude above 1400 feet, and speed is reduced to 60 kts. 2225 HP* will only give you that much in 12 metric ton airftrame.
* The TW3-117M-III series engines have 5 distinct operation regimes:
1 and 2 - Cruise - producing 1200, and 1500 HP
3 - Nominal - producing 1700 HP - 60 minutes limit
4 - TakeOff-limited - 1950 HP - in this mode engine work if the other is inop, but with 6 minutes limit it will probably only get you to the ground/water, longer - it's a gamble.
5 - TakeOff - 2225 HP for limited period of time - as long as exhaust temp. is below 990*C (usually measured in seconds)