Please identify anti slip deck coating

[SV Salty Noodle]

Bought this boat last year and replaced some deck core while doing chain plates. Please help me identify what or how this anti slip texture was created. I have not been able to figure it out and I’d like to match it as close as possible. It’s has a repeating pattern when viewed at an angle like it wad rolled on somehow. Thanks!

[AKA-None]

It could have been rolled on but looks far too tidy.

[Boatguy30]

You can make a mold off it using various techniques. But probably just using gelcote with cabosil and a roller will get close enough.