Shoreline Afghan from Lionbrand Yarns.
Hexagonal motif crochet blanket pattern.
1 Hexagon = about 8 in. (20.5 cm) measured diagonally from corner to corner, and about 7 in. (18 cm) from side to side.
Find the free pattern here: link (NOTE: the Lion Brand Yarns website requires you to login with an email in order to receive this free patttern)