How to reach:
To reach the tidal bench marks from the intersection of Cedar Beach Rd (Rt. 36) and Lighthouse Rd (Rt. 203) in Slaughter Beach, DE proceed 0.66 km (0.41 mi) north on Lighthouse Rd. to the entrance of the Slaughter Beach Public Boat Ramp, then proceed north by boat for 40 km (25 mi) to the Ship John Shoal Lighthouse. The boat landing is located on the east side of the lighthouse. The bench marks are located on the lighthouse foundation and surrounding boulders. The tide gauge is located on the north side of the lighthouse pier.