Now, 50 years later, the M14 is still shooting at sea, although rarely in anger.
UNREP is one of those unique capabilities that builds a war-winning strategic advantage.
To get the process started, the ships maneuver into position, matching course and speed, side-by-side.
That sounds easy enough at first, until the reality of the undulating ocean waves sinks in.
Mother Nature is often downright uncooperative.
Once the ships are aligned, the M14 comes into play, and the Line Gunner is on deck.
The Mk 87 is similar to earlier grenade launching cup-style dischargers.
A safety retaining pin fits through the latch and locks the Mk 87 to the M14.
The loop line connects the shot line to the projectile.
The line is wound around a wooden spindle in a way to prevent fouling when the projectile is fired.
The line is orange colored and water-proofed to be buoyant for at least 24 hours.
Aboard the USS Yellowstone:In the North Atlantic in the winter, the winds are often quite high.
Throwing a line from one ship to another while underway is all but impossible.
That is where the line gunner comes in.
I do recall my Master Chief was there the first time I shot.
The higher the wind, the higher the drift.
I got the first shot over on my first try.
I dont know if my first shot was pure luck, or if I was a natural.
Handling more than 100 UNREPs, I think I only missed three or four times.
Aboard the USS Curtis Wilbur:The training is nothing special; mostly on the job.
The gunners assistant is important too, as they pinch the line spool when the projectile lands on deck.
To get the supplies from one ship to the other, lines were run across.
To shoot the line over, there was really no aiming that I remember.
The rubber projectile was heavy enough that a sort of lobbing was used.
The entire ship secured from UNREP until the emergency was resolved.
The Chiefs condition was so bad that he was transported in a litter across from ship to ship.
The Gunners Mate who fired the line was extremely distraught, I remember.
Over time, you got the feel for it.