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Regulatory Buoy - River Version (427-River)

High-visibility regulatory buoy built for rivers and swift-water channels.  Slow No Wake warning sign on the buoy.

High-visibility regulatory buoy built for rivers and swift-water channels that demand clear “NO WAKE,” “KEEP OUT,” and hazard warnings. The 10″ can rises ~40″ above the waterline on a wide 19″ base for stability in turbulence; a tough CJ-37 outer shell with foam core endures sun, impacts, and season-after-season service. River version includes an off-set galvanized eyebolt for reliable mooring alignment.

  • River-ready stability: 19″ base resists roll and pitch in current and boat wash.
  • Long-range visibility: 10″ cylinder projects ~40″ above water for fast recognition.
  • Durable build: CJ-37 outer shell + 2–3 lb foam to the waterline; internal reinforced concrete ballast.
  • Off-set eyebolt: ½″ galvanized off-set eyebolt improves tether angle in flowing water.
  • Compliance-ready legends: Controlled, Exclusion, and Danger/Hazard symbols (e.g., NO WAKE, IDLE SPEED, KEEP OUT).

Specifications & Ordering

  • Model: 427-River (Jim Buoy)
  • Overall height: 45″; height above waterline: ~40″
  • Can diameter: 10″; base diameter: 19″; weight: 38 lb
  • Shell: High-density polyethylene CJ-37 outer; core: 2–3 lb foam to waterline; ballast: reinforced concrete
  • Hardware: ½″ off-set galvanized eyebolt (river version)
  • Color: molded-in white with standard regulatory bands/symbols
  • Upright ballast: 35–40 lb chain or equivalent required
  • Legends: Controlled Area (SLOW 5 MPH, NO WAKE, IDLE SPEED, SLOW NO WAKE), Exclusion (KEEP OUT, NO BOATS, NO SWIMMING, SWIM AREA, SKI AREA, DAM, FISHING, NO FISHING, NO SKIING), Danger/Hazard (REEF, DANGER, ROCKS, STUMP, HAZARD, SHOALS, DANGER DAM AHEAD), Rocks/Underwater Obstruction, Restricted Travel.
  • Lead time: Ships direct from manufacturer in ~2 weeks.

Frequently Asked Questions

What ballast do I need for upright float?

The 427-River is designed to float upright with 35–40 lb of chain or equivalent weight attached. Choose galvanized chain sized for depth, current, and bottom conditions.

How does the River version differ?

It includes a ½″ off-set galvanized eyebolt to improve the mooring angle and hold in flowing water, while retaining the same can/base dimensions and visibility as the standard model.

Which legends are available?

Controlled Area (e.g., NO WAKE, IDLE SPEED), Exclusion (e.g., KEEP OUT, NO SWIMMING), and Danger/Hazard (e.g., ROCKS, SHOALS), plus Rocks/Underwater Obstruction and Restricted Travel options.

How long until it ships?

Typical lead time is about 2 weeks from the manufacturer. Seasonal demand can affect timing, so order early for spring installs.

What materials are used?

High-density polyethylene outer shell (CJ-37) with 2–3 lb foam to the waterline and reinforced concrete ballast. Built to withstand sun exposure, abrasion, and impact.

Shipping Information
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MSRP: $746.95
Price: $634.95
You Save: $112.00 (15 %)
Item Number: 427-RIVER
Manufacturer: Jim Buoy
Manufacturer Part No: 427-RIVER

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High-visibility regulatory buoy built for rivers and swift-water channels that demand clear “NO WAKE,” “KEEP OUT,” and hazard warnings. The 10″ can rises ~40″ above the waterline on a wide 19″ base for stability in turbulence; a tough CJ-37 outer shell with foam core endures sun, impacts, and season-after-season service. River version includes an off-set galvanized eyebolt for reliable mooring alignment.

  • River-ready stability: 19″ base resists roll and pitch in current and boat wash.
  • Long-range visibility: 10″ cylinder projects ~40″ above water for fast recognition.
  • Durable build: CJ-37 outer shell + 2–3 lb foam to the waterline; internal reinforced concrete ballast.
  • Off-set eyebolt: ½″ galvanized off-set eyebolt improves tether angle in flowing water.
  • Compliance-ready legends: Controlled, Exclusion, and Danger/Hazard symbols (e.g., NO WAKE, IDLE SPEED, KEEP OUT).

Specifications & Ordering

  • Model: 427-River (Jim Buoy)
  • Overall height: 45″; height above waterline: ~40″
  • Can diameter: 10″; base diameter: 19″; weight: 38 lb
  • Shell: High-density polyethylene CJ-37 outer; core: 2–3 lb foam to waterline; ballast: reinforced concrete
  • Hardware: ½″ off-set galvanized eyebolt (river version)
  • Color: molded-in white with standard regulatory bands/symbols
  • Upright ballast: 35–40 lb chain or equivalent required
  • Legends: Controlled Area (SLOW 5 MPH, NO WAKE, IDLE SPEED, SLOW NO WAKE), Exclusion (KEEP OUT, NO BOATS, NO SWIMMING, SWIM AREA, SKI AREA, DAM, FISHING, NO FISHING, NO SKIING), Danger/Hazard (REEF, DANGER, ROCKS, STUMP, HAZARD, SHOALS, DANGER DAM AHEAD), Rocks/Underwater Obstruction, Restricted Travel.
  • Lead time: Ships direct from manufacturer in ~2 weeks.

Frequently Asked Questions

What ballast do I need for upright float?

The 427-River is designed to float upright with 35–40 lb of chain or equivalent weight attached. Choose galvanized chain sized for depth, current, and bottom conditions.

How does the River version differ?

It includes a ½″ off-set galvanized eyebolt to improve the mooring angle and hold in flowing water, while retaining the same can/base dimensions and visibility as the standard model.

Which legends are available?

Controlled Area (e.g., NO WAKE, IDLE SPEED), Exclusion (e.g., KEEP OUT, NO SWIMMING), and Danger/Hazard (e.g., ROCKS, SHOALS), plus Rocks/Underwater Obstruction and Restricted Travel options.

How long until it ships?

Typical lead time is about 2 weeks from the manufacturer. Seasonal demand can affect timing, so order early for spring installs.

What materials are used?

High-density polyethylene outer shell (CJ-37) with 2–3 lb foam to the waterline and reinforced concrete ballast. Built to withstand sun exposure, abrasion, and impact.

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