1. Breaches

2. Vessel sizes – Small boat Harbors

3. Vessel Sizes – Ports

4. Vessel Design Considerations
Vessel Length:
Placement of Breasting Dolphins (Fenders)
Placement of Mooring Dolphins
Size of Turning Basin
Vessel Beam:
Width of Access Channel
Width of Mooring Basin

5. Vessel Design Considerations
Vessel Draft (Loaded):
Determines Required Water Depth
Determines Current Loading
Vessel Freeboard (Empty)
Determines Wind Loading
Vessel Displacement (weight)
Determines dock structure
Determines fender Design (Energy)

6. Site Considerations – Constraints:
Upland Ownership
Upland Access
Upland Area
Use of Adjacent Lands
Deep Water
Shallow Water (Dredging?)
Water Area (Turning Basins)
Wave Exposure (Swell)
Wind Direction
Ice
Environmentally Sensitive Areas

7. PORT DESIGN

8. Port – definition
A Location for Transfer of Cargo Between Ships and Shore.
A Port Normally Includes Infrastructure of Docks and Uplands Necessary for Commercial Activity.
Cargo vessels generally range from about 150 feet to over 900 feet

9. Port Characteristics
Cargo vessels generally range from about 150 feet to over 900 feet.
Dock structures are generally fixed (not floating) and vessels are attended at all times.
Note: Areas of high tidal ranges require constant attention to mooring lines.

10. Small Boat Harbors
A location for permanent or temporary moorage of small unattended vessels.
Moorings normally consist of floating docks.
The vessel size in harbors generally vary from about 18 foot skiffs up to about 150 foot commercial fishing boats.
Larger boats are more often associated with ports and movement of cargo.

11. WHARF Moorage parallel to shore. docking on only one side
Good for heavy duty transfer of cargo – (e.g. containers)
Normally constructed close to shore where depths increase rapidly

12. PIERS Good for Access to Deep Water
Vessels Can Be Moored on Two or More Sides
Have a Limited Capacity
Have Limited Working Space
Commonly Used for Fuel Transfer

13. Types of Docks
Wharf
Pier:

14. Distribution of Ocean Wave Energy
Residual Ocean Swell – about 10 to 15 seconds
Most Inland Waters about 4 to 6 second design wave
84 SPM

15. Define Terms

16. Linear Wave Theory
L=5.12 T^2
Fig SPM

17. Common Equations for Port and Harbor Design
Wave Length (Deep Water): When depth(d) > L/2
Deep
or Lo= T 2 (feet)
Wave Length : When depth(d) < L/2
Requires Iterative Solution
However:
Shallow

18. Ocean swell - Seward Fenders

19. Fender Design
For high tidal range fenders may be designed to move upand down with the tide.
For low tidal range fenders can be at a fixed elevation.

20. Programming Excel for linear wave theory

21. ENVIRONMENTAL Dock design & Fish migration
Pile supported docks are normally preferred for fish migration; however there may be concern for shading
There is concern that vertical faced docks force juvenile salmon into deep water. Sometimes this can be mitigated by hanging material from dock face.

22. ENVIRONMENTAL Dock design & Fish migration
Breach
beach
beach