Complex sentence: At just the young age of 10, Abbott would skin the fish in jars of water and put the bones and cartilage together with fine wire and when he was only 15, he could sail 30 miles at night from Waquoit to Nantucket.
Split into simpler sentences: At just the young age of 10, Abbott would macerate fish in jars of water and put the bones and cartilage together with fine wire. When he was only 15, he could sail 30 miles at night from Waquoit to Nantucket.