"prepare to ship" is correct and usable in written English.
You might use this phrase when you are preparing to send a package or shipment. For example, "I need to prepare to ship these packages before the deadline."
She said Wednesday night that the money raised would allow her to build out the company, which now has 10 employees, and prepare to ship and sell the device in eight months.
The Italians are due to host the first of the America's Cup World Series regattas in June in their base town of Cagliari, Sardinia, and they need to confirm their intention to continue as a matter of urgency as teams prepare to ship their boats to the Mediterranean.
To prepare to ship out, my unit conducted field exercises in which we slept in big tents and on cots surrounded by the rest of a team -- conditions that led to nights of only three to four hours of sleep.
One week later, we flew to Lejeune, and spent December preparing to ship out.
Sony is preparing to ship two million PlayStation 2 consoles to North America this year.
Modell's distribution center in the Bronx is preparing to ship to its 94 New York and New Jersey stores.
He moved deliberately and with care, as if he was preparing to ship them far away and knew they needed to arrive safely.
In preparing to ship his archives to Austin, Ishiguro found a manuscript for a pulp western he thought had been lost – his first serious attempt at fiction.
They start ordering in mid-April, which means Heritage, which roasts and packages its own beans, starts preparing to ship coffee to the hotel industry in March.
From a nearby field, Mr. Rosen appeared, weighed down by armloads of long-stemmed white roses he was preparing to ship to New York.
And so to an airbase, in Vietnam, where Lieutenant Colonel Packard Samuel L. Jacksonn) and his men, including Major Chapman (Toby Kebbell), are preparing to ship out and head home.
