Hi firestar,
“Hard a starboard†means “turn the ship to portâ€. It has meant that from the time sailing ships were steered with tillers, up until the 1930s when that terminology was eliminated by international conventions and national statutes. In the US it was outlawed by act of Congress in the 1800s—the Helm Order Act.
The Titanic’s wheel, like all modern wheels, should be turned to port—counterclockwise—to turn the ship’s head to port, just as it was in Jim Cameron’s film.
The correct helm order on US vessels is “Left rudderâ€. Other countries may use their linguistic equivalent of “Port rudderâ€, but never “Hard a starboard†(Except, perhaps, by weekend sailors).
If you want to reenact according to best evidence, you need to first ring “Full Astern†to signal emergency, and then return the telegraph to Stop.
Remember that the real Titanic took a full 30 seconds to move her rudder hard over, and that there was less than 40 seconds from sighting the berg until collision.
Regards,
Marty