Underwater Markers
Markers engineered to cure and bond while fully submerged, so the mark stays legible underwater.
MM-99 Mighty Marker® Rolling Ball Marker - Medium
MM-66 Mighty Marker® Rolling Ball Marker - Fine
MM-94 Mighty Marker® Rolling Ball Marker - Broad
Which Mighty Marker® Works Best On Underwater Surfaces
Manufactured byArro-Mark®
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| About This Product Line | — | Made for polyurethane tags. Marks stay legible up to 10+ years outdoors. | Ultra-permanent xylene ink. The HVAC and sprinkler industry standard. Marks through oil and water. |
| Permanence | Permanent | Permanent | Permanent |
| Marker Type | Oil-based Paint | Oil-based Ink | Oil-based Ink |
| Actuation | Pump Activated | Valve Controlled | Valve Controlled |
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| Surface Group Compatible surfaces | Metal | Plastics | MetalRubberPlasticsGlass |
| Works In Surface conditions | WetOilyRustyUnderwaterDirtyRoughUneven | -- | -- |
| Application Temp Surface at time of marking | use at -50°F to 150°F (-46°C to 66°C) | use at -50°F to 150°F (-46°C to 66°C) | Black: -50°F to 150°F (-46°C to 66°C). |
| Shop Stainless Steel Rolling Ball Tip Markers | Shop Arro-Tag Markers | Shop Permall Markers |
Need a different stroke width, color, or configuration? We can accommodate custom requirements → Request a Custom Solution
Why Buy A Mighty Marker®
Behind every Mighty Marker® is 70+ years of craftsmanship, in-house formula development, custom engineering, and compliance-ready manufacturing. Designed to solve your exact marking challenge.
Let's Engineer the Right Marker
Can't find a marker that does exactly what you need? Arro-Mark® will engineer a custom marker to your spec.
Frequently Asked Questions
Can I mark a surface after it's already underwater, or does it need to be marked before submersion?
How long does the mark last while the surface stays submerged?
Is an underwater surface marker the same as a wet surface marker?
Why Standard Markers Fail Below the Waterline
Full submersion is the most demanding condition a marker can face. Standard ink is designed to dry and cure in open air, so it never gets the chance to bond before water dissolves the pigment, washes it off entirely, or prevents it from transferring to the surface at all. Mighty Marker® underwater surface formulas are engineered to cure and bond while fully submerged, so the mark stays legible underwater, not just resistant to a splash or a few minutes of rain.
Where Underwater Marking Matters Most
Underwater marking comes up anywhere a surface stays submerged during or after the job: subsea pipeline sections, ship hulls and ballast tanks below the waterline, underwater welding and dive work, and submerged components on offshore and marine construction projects. If the surface won't be dry when the mark needs to be made or read, it's an underwater application, not just a wet one.
Your Needs, Our Expertise
Markers built for your unique surface, condition, application, and compliance.
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