I found a bit more on this, e.g. one French Frigate and four sloops for the Franco-Spanish forces. They stopped off in Florida to pick up some troops, and then sailed to Charleston (Charles Town), SC. The total number of troops for the amphibious force was a respectable 800 strong.
Apparently, the locals had advance warning of the attack, so had some time to prepare their defenses.
They worked on their forts/gun batteries, and gathered a militia.
An individual from the attackers landed to request Charleston's surrender. That was refused, and the individual was offered a tour of the Charleston defenses, and was blindfolded when taken from site to site. The militiamen from each defensive position were sent ahead, and arrayed on display, in order to make their numbers seem stronger.
More forces were requested by the French commander, so another vessel carrying 90 additional troops was dispatched to the area.
William Rhett and a force of six armed merchant vessels opposed the Franco-Spanish force. There is no info on the types of vessels used, or their armament.
They forced the attackers out of Charleston Bay, so they landed at Sewee Bay instead. It is unclear whether an actual battle took place, or if the French commander just ordered a retreat in light of the "strong defenses".
There was a land battle, and the French/Spanish had 300 men killed or captured, including the extra vessel carrying the attackers' reinforcements, which sailed into Charleston Bay later, and was captured, along with the 90 additional men (I presume these are part of the 300 listed above).
No info on the number or types of guns, or numbers of the defenders was provided either.
