According to Waymark, "Construction of these towers took place from 1939 - 1942, with the intention of the buildings having a 20-year lifespan. Quite a few of these buildings remain over 60 years later. 11 stand on the Delaware shore and 2 remain near Cape May, New Jersey."
Sand dunes and a lighthouse mark the harbor of refuge just inside the entrance to the bay.
Horseshoe crabs were coming ashore to lay eggs. Though most abundant during a full moon, there were plenty of crabs rolling up on the beach in the middle of the day during our visit.
Pilot boats for the Delaware Bay are stationed beside the ferry terminal. These boats take pilots out to large ships to take command as they enter the crowded bay from the open waters of the Atlantic ocean.
The last truck boarding for the 13.8 mile ferry trip departing from Lewes, Delaware.
Here's the route across the bay based on the track we recorded with Garmin's BlueChart iPhone app. Cape Henlopen State Park is the point of land at the bottom of the chart.
Leaving the harbor of refuge area we wondered what the string of low, square, structures were in the bay. Referencing NOAA charts on my phone, it turns out they are ice breakers.
Crossing the bay by ferry was a fun, and low stress, alternative to driving through Baltimore and Philadelphia on I-95.