Reference Book: Star Wars Saga Edition Galaxy at War
You and your allies have trained extensively in Underwater Combat and specialize in missions in aquatic environments.
Effect: You gain a +3 competence bonus on Swim checks. At the time you make a check, for each ally within 12 squares of you who also has this Feat, the competence bonus increases by 1 (To a maximum of +7). Additionally, when you swim, you swim at half your Speed as a Move Action (Or you swim at your Speed as a Full-Round Action).