Knot-Tying

DX/Easy
Defaults: DX-4, Climbing-4, or Seamanship-4.

This is the ability to tie a wide variety of knots quickly and efficiently. A successful skill roll lets you make a noose, tie someone up, etc. If you bind someone using this skill, he must win a Quick Contest of Escape vs. your Knot-Tying skill to free himself.

Modifiers: +1 per level of High Manual Dexterity, or -3 per level of Ham-Fisted.

Source: GURPS 4th - Basic Set - Combined, page 205