Martyr CMDIVERMINI Magnesium Hull Anode – 6" x 4" x ½"
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Martyr CMDIVERMINI – Magnesium Diver's Dream Hull Anode
Part Number: CMDIVERMINI | SKU: 194-CMDIVERMINIM
The Martyr CMDIVERMINI is a compact magnesium hull anode engineered for freshwater and brackish-water vessels. Its flat-plate profile mounts flush to the hull, making it a favourite for divers and bottom-paint crews who need a low-profile sacrificial anode that won't snag lines or nets.
Specifications
- Dimensions: 6" (L) × 4" (W) × ½" (H)
- Material: Magnesium alloy – recommended for freshwater and brackish environments
- Mounting: Two-bolt flat-plate design; hardware not included
- System: Hull corrosion protection (cathodic protection)
Compatible Applications
- Freshwater powerboats and pontoons
- Brackish-water vessels (rivers, estuaries, inland lakes)
- Sailboat keels and rudders in freshwater
- Any hull requiring a low-profile flat-plate anode
Note: Magnesium anodes are not suitable for saltwater use. For saltwater hulls, see the Zinc CMDIVERMINI or Aluminum CMDIVERMINIA.
Parts Desk Insights
Best use case: Ideal for freshwater lake boats and river vessels where zinc anodes underperform due to lower water conductivity. Magnesium's higher driving voltage makes it the correct choice in low-salinity water.
Common customer questions: Customers occasionally order this for saltwater use — magnesium anodes deplete too rapidly in salt or ocean water and will not provide adequate protection. Always confirm water type before ordering. If your vessel moves between fresh and salt water, the aluminum alloy version is the most versatile option.
Related Parts
Shipping information
In-stock and OEM parts: ship same or next business day.
Locally warehoused items: ship within 1-3 business days.
Special-order items: timeline confirmed after order.
Returns & warranty
Returns & Satisfaction Guarantee
We stand firmly behind the quality of every product we sell. Your confidence matters to us — and we back it with a straightforward 30-Day Satisfaction Guarantee.
If you are not fully satisfied, you may request a return within 30 days of delivery. All returns must receive pre-approval prior to being sent back. Unauthorized returns will not be accepted.
To qualify for a return:
Item must be in new, unused condition
Product must be in its original packaging
All parts, components, hardware, manuals, and accessories must be included
Packaging must be undamaged and suitable for resale
Important:
Electronics are strictly inspected. No returns on open-box electronics. Exceptions may apply only with prior written approval. Any electronic unit that has been installed, powered, activated, or altered may not be eligible for return.
We are serious about product integrity — and equally serious about taking care of our customers. If there is ever a product issue, contact us immediately so we can make it right.
For return authorization, please contact our support team before shipping anything back.