Dredging Charleston Marina Inner Boat Basin
The Oregon International Port of Coos Bay (Port) will commence dredging of the Inner Boat Basin of the Charleston Marina on January 25, 2019. The first section of dredge pipe has been placed and anchored at Site G (see figure below) and is deployed alongside the inner basin channel through the culvert under Alaska Packers Lane around Coast Guard Point and out to Site G.
Project Description: The Oregon International Port of Coos Bay will hydraulically dredge up to 20,000 cubic yards of material from the Charleston Marina Boat Basin. Dredge material disposal will occur solely with hydraulic pipeline at Site G during an ebb tide. Anticipated time line will be between 4 to 5 weeks and after the start date of January 25, 2019.
Purpose: To provide commercial and recreational vessel access and navigability to existing marina and dock structures maintained by the Oregon International Port of Coos Bay.
Project Location: The project is located at the Charleston inner boat basin, near the confluences of South Slough, Joe Ney Slough and Coos Bay, Charleston, Coos County, Oregon
Vessel Traffic and Security: The Port dredge crew anticipates being able to coordinate with the commercial fishing fleet to both avoid interference with vessel traffic and complete the project within the permitted time constraints. The Port has reached out to all stakeholders and informed them of the work schedule and proposed work site.
Dredging: Charleston marina personnel will employ the dredge LAURA for this project together with the tender vessel Ms. SoCo and a work barge/Super-Fish-All. The LAURA is a 52.2 foot long by 10 foot wide by 3.6 foot deep dredge. The dredge is outfitted with three heavy duty spuds for anchoring and stability once it is in the desired location. The spuds on the Laura are 30 feet long allowing it to anchor itself in 25 plus feet of water. All work will be performed in accordance with specifications and permit conditions.
Dredge Pipe Lighting: Where the pipeline does not cross a navigable channel, the lights must be sufficient in number to clearly show the pipeline’s length and course. The lights must be: (1) Visible all around the horizon, and (2) Visible for at least 2 miles on a clear dark night, and (3) One meter apart in a vertical line with the lower light at the same height above the water as the flashing yellow light. The Port will employ 50 pencil buoys, 25 with beacons and 25 without.