Which operation should be done when launching an inflatable liferaft by hand?

Correct Answer: Option D — Make sure the operating cord is secured to the vessel before throwing it over the side.

Manual deployment under SOLAS and 46 CFR guidelines requires the sea painter to be firmly secured to a permanent shipboard structure. Throwing the container overboard allows the line to fully extend and actuate the inflation mechanism as the unit drops clear of the vessel's side.