I used the stamp set The Open Sea, along with the coordinating designer series paper. The card design is one I fall back to every now and again (see here, here, and here) - it was a weekend challenge by Beate a few years back over at Splitcoast Stampers.
Hope all the dads in your life have a great day today! We're headed over to my folks' for a relaxing BBQ and swim for the kids. Have a great one!