Commodity200520062007200920102011
Dredgers$426,000$1,983,000$34,000$18,000$1,508,000$1,635,000
Light-vessels, fire-floats, floating cranes & oth. vessels the navigability ...$27,000 $82,000  $1,312,000
Total$453,000$1,983,000$116,000$18,000$1,508,000$2,947,000