You could of course "pinch" any Control Room Commands,
Wheel Orders etc from any Novel/Paperback/Hardback that
is currently on the market because, as far as I know, it is
hardly Copyright Material.
"Ten Down, Revolutions for 10 Knots, keep 300 feet"
is Ten Down, Revolutions for 10 knots keep 300 feet -
no matter which way you look at it.
P.S.
Please avoid the Americanisms:
"All ahead flank!!"
"20 knots aye!"
"All ahead Stop!/Start!"
"The Exec has the con!"
As Yoda from Star Wars would say:
....unless it's an American book that it is writing...you are.