At a word from the officer on deck, two young sailors, serving as messengers, darted down the plank, saluting, then relieving the young officers of their suit cases.
Up the gang-plank, and aboard, walked the young ensigns.

First the eyes of Ensigns Darrin and Dalzell sought the Flag.

Bringing their heels together, standing erect, they faced the Stars and Stripes, flying at the stern, bringing their hands up smartly in salute.

The officer of the deck returned to the youngsters the salute on behalf of the Flag.
Then Darrin and Dalzell approached the officer of the deck.
"I am Ensign Darrin, and I report having come aboard, sir," said Dave.

Dan reported his own arrival in similar terms.
"My name is Trent," replied the officer of the deck, as he extended his right hand to each, in turn.