Marine Underwater Magnet for Boat Application

• Customization: Available
• Application: Electronic Products, Industrial Magnet, Underwater Magnet
• Shape: Rectangular
• Model NO.: Marine
• Coating: Nickel
• Grade: N45
• Material: Neodymium /NdFeB Magnet & Shell
• Thread Hole: M8/M10
• Shell Coating: Nickel
• Process: Lathing or Punching
• Strength: 400kg
• Transport Package: Carton Packaging by Sea
• Specification: 117x80x40mm
• Trademark: Multimagnets
• Origin: Ningbo, China
• HS Code: 850511900
• Production Capacity: 100/Month
• Package Size: 40.00cm * 30.00cm * 20.00cm
• Package Gross Weight: 18.000kg

Product Description

Product Description

Marine underwater magnet for boat application 

Material:  Neodymium ( NdFeB) magnet & SS304 /SS316
Magnet Coating: NiCUNI, EPOXY, CHROME etc.
Hole: M8/M10
Pulling force: 400-500KG 
Salt spray test standard: 48 hours / 96 hours

Title: Marine Magnets: The Ultimate Guide to Durable and Waterproof Magnets for Marine Applications

Meta Description: Discover high-quality marine magnets designed for durability and performance in harsh marine environments. Learn about their uses, benefits, and how to choose the best ones for your needs.

What Are Marine Magnets?
Marine magnets are specialized magnets engineered to withstand corrosive, wet, and saltwater environments commonly found in marine applications. Unlike standard magnets, they are crafted with waterproof coatings, anti-rust materials (e.g., neodymium with nickel plating), and reinforced durability to ensure reliable performance on boats, ships, docks, and underwater equipment.

Key Features of Marine Magnets
Corrosion Resistance
Made with stainless steel, nickel-plated neodymium, or rubberized coatings to resist saltwater damage.

High Magnetic Strength
Powerful hold for securing tools, fishing gear, navigation devices, and safety equipment on moving vessels.

Waterproof Design
Sealed to prevent water ingress, ensuring functionality even when submerged.

UV Resistance
Ideal for prolonged exposure to sunlight on decks or docks.

Top Uses of Marine Magnets
Boat & Ship Applications: Secure maps, knives, flashlights, or electronic devices to metal surfaces.

Fishing & Diving: Attach hooks, sonar equipment, or underwater cameras.

Dock Maintenance: Retrieve lost metal objects from water using retrieval magnets.

Safety: Mount fire extinguishers, first-aid kits, or emergency tools securely.

Why Choose Marine Magnets Over Regular Magnets?
Standard magnets rust and degrade quickly in marine conditions, risking equipment failure. Marine magnets are built to last, offering:

Longer lifespan in wet environments.

Higher safety standards for critical marine tasks.

Cost efficiency by reducing replacement frequency.

How to Select the Best Marine Magnet
Strength: Match the magnet's pull force (measured in pounds or kilograms) to your load requirements.

Size: Compact magnets save space but ensure adequate holding power.

Material: Opt for neodymium for maximum strength or ceramic for affordability.

FAQs About Marine Magnets
Q: Can marine magnets work underwater?
A: Yes! High-quality marine magnets are fully submersible and perform reliably in freshwater or saltwater.

Q: How do I maintain marine magnets?
A: Rinse with freshwater after saltwater use and inspect coatings periodically for wear.

Q: Are they safe for electronic equipment on boats?
A: Use caution with sensitive devices-shielded magnets are available to prevent interference.

The testing picture of these diving pot magnet for your reference:
Remark: the strength is the vertical magnetic pull-force which make the magnet pull away from the 1.18'' thickness steel plate of a tester under ideal condition, it does not mean the actual weight which the magnet can lift the actual pull force will vary mainly depending on the following variables:
A: Steel thickness (the thicker the steel is, the stronger the pull force)
B: Attracting position (the farther beyond the center of gravity of the attracted object, the lower the pull force)
C: Pulling direction ( the smaller the angle taking 90°as a standard, the stronger the pull force), the pull force in horizontal direction is only about one third of that in vertical direction)

Following is our standard sizes of pot magnet with countersunk hole for your choice, if there is no size you need or some different requirement, please contact us to customize:
Package of pot magnet with countersunk hole: 
Shipment: Magnet can be shipped by Air, Express, Truck and by sea. But it must be shielded if by air or Express. 
How to promise the quality: Quality is our culture! To ensure our quality, all magnets are produced with 100% new standard material rather than recycle or bad material. Besides our professional QC department will inspect the magnet for each stage, including magnet grade, coating, dimension, tolerance and pulling force for pot magnet, magnetic hook, fishing magnet or other magnetic assemblies. So that our magnet pass rate is as high as 99.5%.
Sample:Sample of diving magnet is available to provide within 2 days if we have it in stock. Otherwise, it takes 7days to custom.
MOQ: Usually we don't require special MOQ of regular magnet or pot magnet for you, small order is available to accept. If you ask for special custom magnet or pot magnet and it needs mold to produce, MOQ is decided as product details.
Custom service: Custom service is our advantage. Multimagnets has a professional technical team to support our customers. We can provide professional CAD drawing, strength simulation of magnet / pot magnet, even that Multimagnets can assist you to design a new magnet. For some Amazon customer, Multimagnets always provide free labeling and professional photos taking.