Pontoon decals
Pontoon Boat Registration Numbers
Short answer
On a pontoon, the registration numbers go on the forward half of both sides where they are plainly visible from the water — in practice that is either the outboard face of each pontoon tube or the forward section of the side fence panel, whichever your state's agency accepts. The characters are still 3-inch block letters in a contrasting color, but the surface is aluminum or a painted rail rather than gelcoat.
Pontoons are the one common hull family where owners genuinely aren't sure which surface the numbers belong on, because there is no conventional bow section to measure from.
The rule is unchanged — forward half, both sides, plainly visible — so the practical question is which forward-half surface is flat, clean and permanently attached.
Design your pontoon numbers
Tap the decal and type your assigned number exactly as it appears on your certificate of number.
Tap the decal to edit
Color on this hull: Black on a bare or brushed aluminum tube gives the strongest contrast. On a dark painted tube or a black fence panel, use white.
Tube versus fence panel
A pontoon tube is a large-radius single-direction curve, which vinyl handles well; the difficulty is preparation, because bare aluminum oxidizes and that chalky layer is what the adhesive would be sticking to. Scrub it, then wipe it with alcohol until the cloth comes away clean.
The fence panel is flat and easy to apply to, but on many boats it is a removable rail section — some agencies object to a number displayed on a removable part. Check your state guide before you choose it.
Where the numbers go on a pontoon
Measure the forward half from the front of the tubes, not from the front of the deck — the deck usually overhangs.
- Keep the set above the waterline and above the strake so it isn't riding in spray.
- Do not span the seam between the tube's nose cone and the tube body.
- If you use the fence panel, keep the set inside one panel section and clear of the gate.
- Match the height above the rub area on both sides so the port and starboard sets look level from the dock.
Character height, spacing, prefix format and validation-decal position are set by your state. Check your state's requirements.
Installing on aluminum
- 1Wash, then de-oxidize the aluminum with a marine aluminum cleaner if it is chalky; rinse and dry fully.
- 2Wipe with isopropyl alcohol immediately before applying — aluminum re-oxidizes quickly.
- 3Apply above 50°F. Aluminum pulls heat out of vinyl fast, and cold adhesive will not tack.
- 4Squeegee firmly; a tube's curve means the ends of the set need more pressure than the middle.
- 5Wait 24 hours before launching, and avoid pressure-washing the tubes for a week.
Terms used on this page
- Tube / log
- The aluminum pontoon itself. Its outboard face is the most commonly accepted number location.
- Fence panel
- The side railing skin around the deck. Flat and easy to letter, but check whether your state accepts a removable panel.
- Nose cone
- The tapered front cap of each tube — a seam and a compound curve; keep lettering off it.
Pontoon registration questions
Do pontoon registration numbers go on the tubes or the railing?
Either can be acceptable as long as the numbers are on the forward half of both sides and plainly visible from the water. Tubes are the safest choice because they are permanently attached; some agencies question numbers displayed on a removable fence panel.
Will vinyl stick to bare aluminum pontoons?
Yes, once the oxidation is removed. Unprepared, chalky aluminum is the most common cause of pontoon decals lifting — the adhesive bonds to the oxide layer instead of the metal.
What color numbers show up best on a pontoon?
Black on bare or light-painted aluminum, white on dark painted tubes or black fence panels. The requirement is contrast with the background, not a specific color.
Order your pontoon numbers
Matched port-and-starboard set in marine-grade vinyl, produced in Marble Falls, Texas.