Operations on the Delaware

Operations on the Delaware (HM8PD)

Location: National Park, NJ 08063 Gloucester County
Buy New Jersey State flags at Flagstore.com!
Country: United States of America
Buy United States of America flags at Flagstore.com!

N 39° 52.153', W 75° 11.411'

  • 0 check ins
  • 0 favorites
When the Revolution began, Congress ordered construction of river defense systems to protect Philadelphia against a sea attack. A system of cheveaux-de-fries, a series of underwater obstructions, was developed. These consisted of large coffers (boxes) made of pine logs lined with planking. Long, heavy poles with iron tipped spikes projected out of the coffers at a 45 degree angle. The coffers were floated to strategic positions in the Delaware, filled with rock and sunk just below water level to impale enemy ships sailing upstream.

The Pennsylvania Council of Safety oversaw planning and construction of the fortifications, which included the cheveaux-de-fries, land batteries, and a navy to guard the river. Three sites were selected: Fort Mifflin, Fort Mercer at Red Bank and Billingsport. Row galleys were designed by Philadelphia shipwrights and formed the backbone of the Pennsylvania navy. The fifty-foot boats, with a cannon mounted in the bow, patrolled the river.

On October 23, 1777, the day after the victory at Red Bank, the 64 gun British warship Augusta exploded and sank down river under heavy American attack. The similar loss of the Merlin, a sloop carrying 18 cannons, and the victory of Colonel Christopher Greene delayed the British attempt to clear the river defenses.
HM NumberHM8PD
Placed ByRed Bank Historical Park
Marker ConditionNo reports yet
Date Added Tuesday, October 7th, 2014 at 1:18am PDT -07:00
Photo Credits: [1] BRIDGER1963  
Locationbig map
UTM (WGS84 Datum)18S E 483735 N 4413259
Decimal Degrees39.86921667, -75.19018333
Degrees and Decimal MinutesN 39° 52.153', W 75° 11.411'
Degrees, Minutes and Seconds39° 52' 9.18" N, 75° 11' 24.66" W
Driving DirectionsGoogle Maps
Area Code(s)856
Closest Postal AddressAt or near 101-103 County Rd 642, National Park NJ 08063, US
Alternative Maps Google Maps, MapQuest, Bing Maps, Yahoo Maps, MSR Maps, OpenCycleMap, MyTopo Maps, OpenStreetMap

Is this marker missing? Are the coordinates wrong? Do you have additional information that you would like to share with us? If so, check in.

Check Ins  check in   |    all

Have you seen this marker? If so, check in and tell us about it.

Comments 0 comments

Maintenance Issues
  1. Is this marker part of a series?
  2. What historical period does the marker represent?
  3. What historical place does the marker represent?
  4. What type of marker is it?
  5. What class is the marker?
  6. What style is the marker?
  7. Does the marker have a number?
  8. What year was the marker erected?
  9. This marker could use another picture or two.
  10. Can this marker be seen from the road?
  11. Is the marker in the median?