- Shipping -- Northwest, Pacific -- Congresses5
- Coastwise shipping -- Northwest, Pacific -- Congresses4
- Merchant marine -- Northwest, Pacific -- Congresses4
- Barges -- Northwest, Pacific -- Congresses3
- Cargo ships -- Northwest, Pacific -- Congresses3
- Inland water transportation -- Northwest, Pacific -- Congresses2
- Coastwise shipping -- Northwest, Pacific1
- Inland water transportation -- Northwest, Pacific Congresses1
- Intercoastal shipping -- Northwest, Pacific1
- Log trasportation -- Northwest, Pacific1
- Lumber -- Transportation -- Northwest, Pacific1