Skills are percentage-based levels determining how capable a character is at performing a specific task. Depending on the job the character has, they will be given a ranged percentage of skill in each field.
Weapon skill determines a character's effectiveness with certain weapons. Not having the required skill level to use a weapon will hinder its performance in a particular field. Captains and security officers have the highest level of weapon skill in the crew.
Construction skill determines whether a character can operate a tool safely and what can be crafted on a Fabricator. Not having the required skill level can cause the tool to malfunction and harm the player and limits what can the player construct. Mechanics have the highest level of construction skill in the crew.
In addition the construction skill is used to determine whether a character is capable of performing mechanical repairs on installations.
Electrical engineering skill determines whether a character can perform electrical repairs on installations. Engineers have the highest level of electrical engineering skill in the crew.