Boat Registration Number Decals – Fits Boats, Yachts, PWC (Replaces NorthBoat, Hardline RED350EC)
Boat Registration Number Decals – Fits Boats, Yachts, PWC (Replaces NorthBoat, Hardline RED350EC) is backordered and will ship as soon as it is back in stock.
Worry-free returns
Worry-free returns
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Delivery and Shipping
Delivery and Shipping
Orders are typically processed within 1–2 business days.
U.S. orders usually arrive within 6–15 days, depending on stock location and destination.
International delivery times may vary due to customs processing.
Tracking information will be provided once your order ships.
Boat Registration Number Decals – Fits Boats, Yachts, PWC (Replaces...
Boat Registration Number Decals – Fits Boats, Yachts, PWC (Replaces NorthBoat, Hardline RED350EC) is backordered and will ship as soon as it is back in stock.
Product Details
These red 3-inch Boat Registration Number Decals are designed for clear vessel identification on boats, yachts, and personal watercraft. The waterproof, UV-resistant vinyl stickers meet US Coast Guard and state guidelines when properly installed, ensuring long-lasting durability in marine environments.
These decals serve as direct replacements for NorthBoat 3" Red Hard, Hardline Products RED350EC, and STIFFIE Whipline WL Series kits.
- Features a simple peel-and-apply installation method.
- Engineered for marine use; fully waterproof, scratch-resistant, and UV-protected.
- Includes four complete sets of letters (A-Z) and numbers (0-9) to register your vessel.
Part Number Matrix
Use this matrix to confirm equivalent references across OEM and aftermarket.
| Brand | Part Number / Series |
|---|---|
| NorthBoat | 3" Red Hard |
| Hardline Products | RED350EC |
| STIFFIE | Whipline WL Series |
Engine & Model Compatibility
Confirm your vessel type in the table below.
| Category | Vessel Type | Notes |
|---|---|---|
| Recreational | Boats | All types requiring registration numbers |
| Recreational | Yachts | All types requiring registration numbers |
| Recreational | Pontoons | All types requiring registration numbers |
| Recreational | Center Consoles | All types requiring registration numbers |
| Recreational | Bow-Riders | All types requiring registration numbers |
| Personal Watercraft (PWC) | Jet Skis | All brands requiring registration numbers |
| Personal Watercraft (PWC) | Waverunners | All brands requiring registration numbers |
| Personal Watercraft (PWC) | Sea-Doos | All brands requiring registration numbers |
| Personal Watercraft (PWC) | Jet Boats | All brands requiring registration numbers |
Technical Specs
- Product Type
- Boat Registration Number & Letter Decals
- Installation
- Peel and Apply
- Material
- Marine-Grade Vinyl with UV Clear Coating
- Color
- Red
- Size
- 3" (76.2 mm)
- Quantity
- 4 Sets (A-Z and 0-9)
- Total Decals
- 144-146 pieces
- Waterproof
- Yes
- UV Resistant
- Yes
- Adhesive Type
- High-Tack Permanent Waterproof
- Scratch Resistant
- Yes
- Surface Compatibility
- Gel-Coat, Fiberglass, Aluminum, Metal, Paint, Wood, SMC, Plastic
- Font Style
- Block/Smooth
- Application
- Both sides of vessel (Starboard and Port)
- Regulatory Compliance
- Meets US Coast Guard & State guidelines when installed correctly
What’s in the Box
- 4 x Complete Sets of Letters A-Z and Numbers 0-9 (144-146 total decals)
Installation Notes
- Clean the application area thoroughly with soap and water or rubbing alcohol. Ensure the surface is dry and free of wax, dirt, or oils.
- Measure and create a straight, level guideline with masking tape to ensure proper alignment of your registration numbers.
- Peel each decal from its paper backing, being careful not to touch the adhesive side.
- Apply the decal to the surface, starting from one edge and smoothing it out with a squeegee or credit card to remove air bubbles.
- Repeat for all characters, ensuring proper spacing between them as required by local regulations (typically a character's width).
- Once all decals are applied, press them down firmly one last time and carefully remove the guideline tape.
Troubleshooting & FAQ
Are these decals compliant with US Coast Guard (USCG) regulations?
Yes, the 3-inch height, block-style font, and contrasting color meet USCG and state requirements when applied correctly to both sides of the vessel's forward half.
How many registration numbers can I create with this kit?
The package includes four complete sets of A-Z and 0-9, which is sufficient to apply your unique registration number to both the port and starboard sides of your boat or PWC.
What surfaces can I apply these decals to?
These decals are designed for high-tack adhesion to most common marine surfaces, including Gel-Coat, Fiberglass, Aluminum, Metal, Paint, Wood, SMC, and Plastic.
How do these DIY decals compare to custom pre-spaced registration kits?
This is a DIY kit with individual peel-and-stick characters, giving you flexibility. Custom services pre-arrange the numbers on a single application tape for easier installation, but typically cost significantly more.
What is the best way to ensure the numbers are aligned straight?
We recommend using a strip of masking tape as a straight-edge guide. Place the tape on the hull where you want the bottom of the decals to align, then apply each character along the top edge of the tape.
Can I remove the decals easily?
The decals use a high-tack permanent waterproof adhesive for durability. Removal is possible but may require a heat gun to soften the vinyl and an adhesive remover to clean up any residue.
Is this an OEM part?
This listing is an aftermarket replacement (not OEM). It is built to OEM-level specifications with comparable materials and manufactured in an ISO 9002 facility, with batch-inspections for consistency.
What are the shipping speed and cost?
We ship worldwide quickly—typical transit is 5–15 days. Standard shipping is free, and expedited options will appear at checkout if available for your location.
What is the warranty and return policy?
This product is covered by a 1-year warranty against manufacturing defects under normal use. If you encounter an issue, please contact our support team with your order details. Returns are accepted within our standard window for unused items in their original condition. See our policy page or reach out for instructions.
Safety & Important Info
- Verify images and specifications against your original part. If anything differs—even if your model appears compatible—do not purchase.
- This is an aftermarket replacement, not an OEM component.
- Professional installation is recommended for safety and performance.
About Sea Sierra
- Pro-Grade Standards — We supply marine parts engineered to OEM-level tolerances and tested for real-world conditions.
- Fast Global Fulfillment — Free standard delivery to most regions in 5–15 days.
- Manufacturer-Direct Value — Fair pricing without compromising on materials or QC.
Payment & Security
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