“The shipping of the prototype…” or “The prototype shipping…”?
You asked which is correct:
1.”The shipping of the prototypes…”
2.”The prototype shipping…”
Neither of these are complete sentences, so it is difficult to know exactly what you are trying to say. No matter what, it is important that the grammar and mechanics are correct. You want your message to look professional and to be clear to the recipient.
To ensure this, I would not use either. Below are a few alternate examples:
The prototypes will be shipped out on March 28th, 2018.
The prototypes were shipped yesterday.
The prototypes are ready to be shipped.
The prototypes have been shipped.
I hope this was helpful! If you have any follow-up questions, please let me know.