B08_Solicitation_(Attachement_2_-_Drawings_-_Buoy_Profile_Helical_Anchor).pdf
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- Attached to
- PAIS - Replace Buoys and NAV. Signs
- Solicitation number
- 140P6026Q0059
About this file
Bird Island Basin Buoy Profile Technical Documentation
This is a technical engineering drawing and data sheet documenting buoy depth measurements and structural specifications for the Bird Island Basin at Padre Island National Seashore. The document presents surveyed depth data for seven regulatory buoys positioned in the basin, with measurements adjusted for tidal variations and storm surge using NOAA Tides & Currents data from the Observed Water Levels station at 8776139, S. Bird Island TX. All depth measurements are recorded in feet, rounded to two decimal places, with tidal datums referenced to Mean High High Water (MHHW at +1.25 ft) and Mean Lower Low Water (MLLW at -0.66 ft) relative to 0 ft MSL.
The accompanying depth table presents six buoys surveyed on October 17, 2024, and one buoy surveyed on April 15, 2025, with coordinates ranging from 27°28'25.5810"N to 27°28'27.7018"N latitude and 97°18'46.7202"W to 97°18'52.8081"W longitude. Surveyed depths range from 2.5 to 5.5 feet, with adjusted MSL values between 1.25 and 4.57 feet, and storm surge adjustments (MSL + 3' Surge) ranging from 4.25 to 7.57 feet. The profile drawing illustrates the complete mooring assembly configuration, including pick-up lines, elastic rodes, midline floats, shackle connections, and helical anchors (8-inch diameter, 4 to 5.5 feet length), with horizontal spacing distances between buoys ranging from 588 to 2,403 feet.
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Text version
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BUOY 05 27°27'39.3744"N 97°19'08.0406"W
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BUOY 04 27°27'47.4049"N 97°19'21.9064"W
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BUOY 03 27°28'08.4927"N 97°19'11.1323"W
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BUOY 02 27°28'29.8941"N 97°18'59.4414"W
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BUOY 06 27°28'27.7018"N 97°18'52.8081"W
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BUOY 01 27°28'25.5810"N 97°18'46.7202"W
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MSL
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MSL
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EDGE OF PARKING LOT LINE BIRD ISLAND BASIN CAMPGROUND
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BIRD ISLAND BASIN EDGE PARKING LOT
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ROPE
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PVC TUBING
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PICK-UP LINE
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EYE TO EYE MOORING ANCHOR SWIVEL
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ALT. SHACKLE CONNECTION
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SUR-MARK REGULATORY BUOY
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MIDLINE FLOAT
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SHACKLE
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MSL
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3' ELASTIC RODE
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HELICAL ANCHOR 8 INCH DIA 4 FEET - 5.5 FEET
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DATE:
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DESIGNED:
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TECH. REVIEW:
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SUB SHEET NO.
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PMIS/PKG NO.
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DRAWING NO.
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SHEET
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OF
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TITLE OF SHEET
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BIRD ISLAND BASIN
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BUOY PROFILE
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FLECK N.
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25APR2025
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PADRE ISLAND NATIONAL SEASHORE
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PAIS
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