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Multibeam Hydrographic Survey at Naval Station Mayport Project Name

Multibeam Hydrographic Survey at Naval Station Mayport

Market Supported

Hydrographic

Location

St. Johns River

Client

NAVFAC SE

Completion

2014

Scope

Detect any shoals, lumps, or areas above the navigation channel limit of -50 feet MLLW in the one-half square mile project area.

Main Project Tasks

Degrove Surveyors was tasked with a multibeam hydrographic survey for the NAVFAC Underwater Electro-Magnetic Measurement System (UEMMS) Type VI Upgrade Project at Naval Station Mayport in Mayport, Florida. This project upgraded an existing Type V magnetic measurement range.

The post-construction survey, of the one-half square mile project area, located on the river bottom of the Naval Station Mayport ship channel, in the St. Johns River. The survey was used to detect any small shoals, lumps, or areas above the navigation channel limit of -50 feet MLLW that may require the contractor to send down additional divers to rake the area.

Maps were produced showing one foot contour intervals and dense spot elevations.