Where the Chinook would have been best employed in this evacuation would be to shorten the Winching Aircraft's flight to shore......by creating an LZ near the shore....where the winching aircraft could drop off their survivors...then return to the ship....while the Chinook then ferried groups of landed survivors to a better protected and equipped location near by where Medical/lodging/onward transportation was at hand.
This all requires "Fuel"....both for the Winching Aircraft and the Chinooks doing the shuttle flights.
The Chinook could really shine if a military FARP could be brought in to the initial landing point on the shoreline landing spot or a Chinook or Chinooks could be equipped as the FARP by means of internal tanks and pumps.
But...we have to consider the Timeline for such responses as this was.....these happen with no notice and as in this one....in a very remote location.
Logistics would be very complicated.
Again.....Hand Salute to all who participated in this rescue effort....Well Done!