The massive humpback whale surfaced and nonchalantly swam toward Southern Cross, my dad’s J/44, off the port bow, lackadaisically passing within a few feet. Dad’s boat, which weighs more than 11 tons, felt utterly minuscule. Cameras materialized as we killed the engine on that windless August morning off Provincetown, Massachusetts. This was in 2006, so we had no way of sharing our images instantly, and by the time our enormous friend grew bored and dove deep, leaving us to hoist sail in a thinly gathering breeze, our cellphones had gone dark. This whale’s tale would have to stay among friends and family, at least until we crossed the Gulf of Maine and joined Southwest Harbor’s cellular network.