Reports are that other shipping heard the Duck Boat call. The tug boat mate who may have been at helm is not talking to investigators.
Between Ben Franklin and Walt Whitman Bridges the river PA to NJ bulkhead is all shipping channel, with the dredged channel from about state line to the PA bulkhead. The Duck Boat was reported to be about 150ft from the PA bulkhead, maybe closer as people on shore could throw fire hoses to the passengers.
The barge was empty, sitting high and did not need the full depth of the dredged channel. So why were they so close to the PA bulkhead and why did they not hear or respond to the call from the duck boat?
On a sailboat if you do not have suffcient wind to safely cross the shipping channel, don't try to cross under sail.
If motoring across the channel don't cross until the channel is clear and keep looking over your shoulder.
If travelling in a shipping channel stay near the outer edges and keep looking over your shoulder.
If in trouble call a Pan-Pan on 16. the CG will repeat your Pan-Pan and request other boater come to your aid. Last summer I responded to a Pan-Pan relayed by CG, but by the time I got to the location off the Boeing plant in about 10mins, 3 power boats were already aiding a disabled boat.
1970 Havsfidra 20 by Fisksatra
On the Delaware River at Fox Grove Marina Essington PA