RedactedNarrative: While attempting to return to Harbor once at the entrance known as Chatham Bar operator noticed large waves.  He decided to wait outside the bar for a lull in the seas when a rogue wave swept his vessel from behind causing the bow to plunge under water and eventually capsizing the vessel.  Both operator and his son were ejected from vessel.  They were not wearing life jackets and were not injured.  Chatham Harbormaster's office pulled them from the water.