Who is Lt. Commander Lee Koski from Iceberg and what is their importance?

Koski is the commander of The Catawaba, which is the US Coast Guard super cutter, on which, Pitt begins his adventure. Koski is described as blue eyed with wheat-colored hair, as well as short and sturdy. An experienced sailor, he is also said to be a strong commander....... protective of his crew and his ship and a man who strictly adheres to rules. Koski is a symbol of military authority.