Shallower draught craft , such as the traditional Thames sailing barges , may continue on down the East Swin .
Shallower draught craft , such as the traditional Thames sailing barges , cross the Middle Sands directly into the West Swin at Maplin Edge .
Shallower draught craft , such as the traditional Thames sailing barges , may continue on down the East Swin and cross the Middle Sands directly into the West Swin at Maplin Edge .