S9 "Goliath" surface skimmer is a part of a drone defense system usually deployed in settlements with medium to high security. It's a "bigger, better, stronger" version of an S4 skimmer, capable of mounting a missile launcher firing in salvos of four missiles. It is always equipped with a shield generator. Its hull is much more resistant to weapon fire than that of an S4.
Core Dynamics S9 ‘Goliath’ skimmer – A very effective solution to your security needs. Using four surface thrusters this armoured and well-armed skimmer is the most effective on the market. Its greater cost means it is generally only used by military clients, and use is not permitted in some jurisdictions given their offensive abilities.
— Newsletter #94
Warning: As of recent updates, ramming a Goliath skimmer will deal severe damage to your ship, much more so than ramming the ground.