Attribute Enhancements – Attribute enhancements refer only to positive changes in the attributes of a ship or personnel. SHIELD extension from a facility and ATTACK and DEFENSE bonuses are not attribute enhancements; thus, Shipwreck and Weak Spot do not affect a facility’s ability to extend its SHIELDS around ships.

See attribute modifiers, battle – ship.
The attributes of ships with a restriction box such as the Keldon Advanced are not enhanced by the presence of the required skill or characteristic aboard (in this case, Obsidian Order); rather, they are reduced if the required skill or characteristic is not aboard.