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Regulatory Buoy - Red Nun (427-NUN)

Red 427-Nun buoy with 10 inch can and 19 inch base for lateral channel marking

High-visibility red nun buoy for lateral/channel marking. The 10″ can rises ~40″ above the waterline on a wide 19″ base for stability; a tough CJ-37 outer shell with foam core handles sun, impacts, and seasons of service. Ships from Jim Buoy.

  • Long-range visibility: 10″ cylinder projects ~40″ above water for fast recognition.
  • Stable footprint: 19″ base resists roll and pitch in chop, current, and boat wash.
  • Rugged build: CJ-37 “rock-hard” shell + foam to the waterline for long life.
  • Molded-in color: Solid red nun for lateral/channel marking.
  • Upright float spec: Designed to float upright with 35–40 lb chain or equivalent ballast.

Specifications & Ordering

  • Model: 427-NUN (Jim Buoy)
  • Overall height: 45″; height above waterline: ~40″
  • Can diameter: 10″; base diameter: 19″; weight: 38 lb
  • Shell: High-density polyethylene CJ-37; core: 2–3 lb foam to the waterline; ballast: reinforced concrete
  • Hardware: ½″ galvanized steel eyebolt
  • Color: molded-in red (nun)
  • Upright ballast: 35–40 lb chain or equivalent required
  • Use case: Lateral/channel marking (red nun). Confirm numbering/orientation with your local authority and charts.
  • Lead time: Ships direct from manufacturer in ~2 weeks.

Frequently Asked Questions

What is a red “nun” buoy used for?

Red nun buoys are used for lateral/channel marking. In many U.S. waterways, red marks identify the starboard (right) side when returning from open water. Always follow local regulations and charts.

What ballast do I need for upright float?

The 427-Nun is designed to float upright with 35–40 lb of chain (or equivalent weight). Size chain for depth, current, and bottom conditions.

How visible is the can above water?

The 10″ can section projects approximately 40″ above the waterline for long-range visibility to boaters.

What materials are used?

High-density polyethylene CJ-37 shell with 2–3 lb foam to the waterline and reinforced concrete ballast for durability.

How long until it ships?

Typical lead time is about 2 weeks from the manufacturer; order early ahead of boating season.

Shipping Information
MSRP: $604.95
Price: $549.95
You Save: $55.00 (9 %)
Item Number: 427-NUN
Manufacturer: Jim Buoy
Manufacturer Part No: 427-NUN

High-visibility red nun buoy for lateral/channel marking. The 10″ can rises ~40″ above the waterline on a wide 19″ base for stability; a tough CJ-37 outer shell with foam core handles sun, impacts, and seasons of service. Ships from Jim Buoy.

  • Long-range visibility: 10″ cylinder projects ~40″ above water for fast recognition.
  • Stable footprint: 19″ base resists roll and pitch in chop, current, and boat wash.
  • Rugged build: CJ-37 “rock-hard” shell + foam to the waterline for long life.
  • Molded-in color: Solid red nun for lateral/channel marking.
  • Upright float spec: Designed to float upright with 35–40 lb chain or equivalent ballast.

Specifications & Ordering

  • Model: 427-NUN (Jim Buoy)
  • Overall height: 45″; height above waterline: ~40″
  • Can diameter: 10″; base diameter: 19″; weight: 38 lb
  • Shell: High-density polyethylene CJ-37; core: 2–3 lb foam to the waterline; ballast: reinforced concrete
  • Hardware: ½″ galvanized steel eyebolt
  • Color: molded-in red (nun)
  • Upright ballast: 35–40 lb chain or equivalent required
  • Use case: Lateral/channel marking (red nun). Confirm numbering/orientation with your local authority and charts.
  • Lead time: Ships direct from manufacturer in ~2 weeks.

Frequently Asked Questions

What is a red “nun” buoy used for?

Red nun buoys are used for lateral/channel marking. In many U.S. waterways, red marks identify the starboard (right) side when returning from open water. Always follow local regulations and charts.

What ballast do I need for upright float?

The 427-Nun is designed to float upright with 35–40 lb of chain (or equivalent weight). Size chain for depth, current, and bottom conditions.

How visible is the can above water?

The 10″ can section projects approximately 40″ above the waterline for long-range visibility to boaters.

What materials are used?

High-density polyethylene CJ-37 shell with 2–3 lb foam to the waterline and reinforced concrete ballast for durability.

How long until it ships?

Typical lead time is about 2 weeks from the manufacturer; order early ahead of boating season.

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