Complex sentence: In his service to the king, he arrived at his own expense to build three shi; s. The first was a ship called "The Apostle Santiago" serving protection missions for Spanish merchants going to or coming from Americas.
Split into simpler sentences: In his service to the king, he arrived at his own expense to build three boat. El first was a ship called "The Apostle Santiago" serving protection missions by Spanish merchants going to or coming from Americas.