SAFETY & CERTIFICATION
Unsinkable by Design
Coast Guard–tested flotation and capacity — the kind of proof an inflatable can’t offer.
ENGINEERED SAFE
Extremely Safe — and Certified to Prove It
Inflatables and RIBs are exempt from the U.S. Coast Guard flotation and capacity rules. The Mantus Dinghy isn’t — it’s built to pass them.
PASS
Loaded Past Max Capacity
Piled with 5× the rated weight — and it still sits high and stable on the water.
PASS
Every Chamber Flooded — Still Floats
Hull and seats drilled to flood every air pocket. Fully swamped, it still carries crew, fuel and engine.
THE COMPETITION
A Deflated Inflatable
No engine, no gear — and it’s already gone. One puncture is all it takes.
Two-Layer Wall Construction
Layer 1 — HDPE: absorbs shocks and impacts with sharp objects.
Layer 2 — PE Foam: built-in flotation throughout the hull.
Passes USCG Flotation Test
Every air chamber is drilled and flooded — and the boat still surfaces fully loaded with people, gear and motor. Picture what a punctured inflatable does instead.
Real, Tested Max Capacity
Rated 755 lb through rigorous USCG testing — not an arbitrary manufacturer number. We loaded it to 5× rated capacity and it held.
Coast Guard Testing Video
WHY IT MATTERS
What “Coast Guard Certified” Actually Means
The U.S. Coast Guard sets strict flotation and maximum-capacity standards for monohull boats under 20 feet. Inflatables and rigid inflatables (RIBs) are classed as a “different type of boat” and are exempt — their capacity labels are simply the manufacturer’s recommendation. The Mantus Dinghy is a rigid monohull, so it has to meet the real standard, and it does.
The Flotation Test, Step by Step
- Every air chamber and seat cavity is drilled and flooded so it can hold no trapped air.
- The boat is then loaded with the full rated weight of people, gear, fuel and engine.
- It must stay afloat and stable — keeping crew at the surface even in a worst-case swamping.
- The Mantus Dinghy passes. A punctured inflatable, by contrast, simply sinks.
SAFE BY DESIGN
Built Safe, From the Hull Up
Foam-Filled Hull
A solid PE-foam core means buoyancy is built into the structure — not held in air that can leak away.
No Air to Lose
No tubes, no valves, no glue seams. There’s nothing to puncture, deflate, or patch on a cold morning.
Impact-Absorbing HDPE
The rotomolded HDPE shell shrugs off rocks, docks, and dropped anchors that would slice an inflatable.
Tested to 5× Capacity
We didn’t stop at the rated 755 lb — we loaded it to five times that and it stayed stable and afloat.
Safety You Can Stake Your Crew On
The tender that won’t sink, won’t deflate, and won’t quit. See the full Model 104.