attwood River Anchor 18 lb PVC-Coated Cast Iron — Black, Wide Non-Folding Flukes for Muddy/Rocky Bottoms

The Attwood 9946B1 River Anchor is an 18-pound black PVC-coated cast iron grapnel designed to grab and hold in muddy, rocky, and debris-filled river bottoms.

Built for inland waterways where anchors must snatch a secure hold among rocks, roots and submerged timber, this river-specific anchor uses wide, non-folding flukes to act like grappling hooks. Attwood’s 100+ years of marine manufacturing experience is reflected in the heavy cast-iron body and protective PVC finish that help resist corrosion and reduce hull scuffing while delivering the weight and geometry needed to set quickly in challenging river beds.

How does the fluke design improve holding in rivers?

The broad, fixed flukes are shaped to catch obstacles on river bottoms—mud, stones, stumps and brush—so the anchor bites rather than skids. Because they do not fold, the flukes maintain their grappling profile when dragged or set in varying currents.

• Wide, non-folding flukes act like hooks to snag debris and irregular bottoms
• Geometry resists rolling, improving initial set on glance-prone surfaces
• Performs better in mixed substrates than standard fluke or plow anchors

What construction and coatings keep the anchor durable?

Manufactured from solid cast iron, the 9946B1 provides the mass and toughness required for frequent river use. A black PVC coating adds a sacrificial barrier against abrasion and helps reduce surface rust while protecting boat finishes during handling and storage.

• Solid cast iron body for dependable strength and long service life
• Black PVC coating reduces scratching and slows corrosion
• Large steel eye for secure, simple connections to rope or chain

Is an 18-pound anchor the right size for my boat and conditions?

An 18 lb river anchor suits small to medium boats commonly used on rivers, providing enough mass to hold in muddy, rocky, and debris-strewn bottoms. Match anchor weight to your boat’s length and displacement, and consider adding chain to improve holding in rocky or uneven riverbeds.

• Best for small to medium-sized craft operating on rivers and inland waterways
• Pair with appropriate rode length and optionally a chain for shock absorption
• Consult boat specs and local conditions when sizing anchors for safety

How do I rig, deploy, and maintain this river anchor?

Attach rope, chain, or a combination via the large eye and lower the anchor carefully until it finds hold; avoid dropping to prevent snagging on the hull. Rinse and dry after use, inspect the PVC finish and eye, and touch up or replace components if coating or metal shows wear.

• Use a bridle or swivel with the steel eye to reduce line twist
• Rinse with fresh water after freshwater use and dry before stowing
• Inspect PVC coating, eye integrity, and cast iron for nicks or rust periodically

Who is this for: The Attwood 9946B1 is aimed at boater owners who spend time on rivers and need an anchor that will reliably bite into irregular bottoms—anglers, small cruiser owners, and anyone moored near stumps, rocks, or heavy debris. If you want a compact, heavy anchor that minimizes hull scuffs and delivers dependable holding power in inland waterways, this 18 lb PVC-coated cast iron grapnel is a practical, serviceable choice.