I would like the ship to go. Now.

LETS BLOW THIS POPSICLE STAND

alright alright alright.

"Let's do it."

Either "lets fucking gooooooo" roared at full volume.

Or "do the thing" in a barely audible mumble.

And crew would never know which to expect.

At your pleasure

I'd start singing 🎶 on the road again

"Okay, 3, 2, 1, let's jam" or if we're in a hurry "SHOWTIME"

[Specific command containing speed and heading], [helmsman's name]

This businesss with a catchphrase is too corny and meta. Keep it simple and direct, like Kirk did: "Ahead warp factor 8, Mister Sulu."

Release the Treken!

Who the fuck put me here aaaaaaaaaaaah

Disregarding that: "Reingehauen!" (I specifically requested this not be translated)

"Let's go."

Although I'm also partial to Saru's "Proceed." or French-Dub-Picard's "Energise".

"Let's make like a tree, and get the fuck out of here!"

On a ship capable of traveling the mycelial network like on DSC, "Make it spin!" Because I would be familiar with Stargate SG-1 in Star Trek. When IPs collide, a nebula spawns a star.

Otherwise, "Let's go!"

Seems like Starfleet would have a selection of 5 allowable "Engage" variations lol so that everyone get's trained on how to know when to go