To size a cover for a 14-foot boat, measure the centerline length and the beam width of the boat itself—not the trailer—using straight, level lines.
Getting the right cover starts with two numbers, and getting them wrong means a flapping, pooling mess that holds water. The good news is that measuring for a 14-foot boat cover takes about five minutes and a cloth tape measure. The trick is knowing exactly what to measure, what to ignore, and which common mistakes turn a solid fit into a loose one. Here’s the process that works.
What Two Measurements Do You Need?
You need the boat’s centerline length and its beam width. These are the two key measurements used by most universal-fit cover size charts.
The centerline length is a straight line from the tip of the bow to the farthest aft point you intend to cover. The beam is the widest point of the boat, measured side-to-side in a straight horizontal line.
Do not use the boat’s nominal class size (like calling it a “14-footer”) as your cover size, and never measure the trailer. The boat’s hull is what the cover needs to fit, so that is what you measure.
How to Measure the Length Correctly
Measure straight along the centerline from the bow tip to the back. ” Keep the tape flat and level—this means you measure across the boat, not up and over windshields, rails, or seats.
Here is where most people trip up: fixed accessories count, removable ones do not. If the boat has a bow pulpit, a swim platform, a transom ladder, or a trolling motor mounted to the deck, those are permanent parts of the boat and add to the length you need to cover. Bumpers, coolers, and loose gear do not count.
If your cover is meant to include a fixed rear extension or a deck extension, add that to your length measurement. For a 14-foot boat with a swim platform, for example, a cover sized to the bare hull will come up short at the stern.
How to Measure the Beam and Avoid Common Mistakes
Measure the beam at the widest point of the boat, straight across from gunwale to gunwale. Do not follow the curve of the hull, and do not include removable items like bumpers hanging off the sides.
- Measuring the trailer instead of the boat itself.
- Running the tape up and over windshields, rails, or seats, which adds inches you do not need.
- Forgetting fixed accessories that increase the required length.
- Including removable accessories that should not count.
For a 14-foot boat, these handful of inches matter. A cover that is too small strains at its seams, and one that is too large collects water in loose pockets. When in doubt, go up—a bigger cover you can secure beats a smaller one you cannot.
Which Measurement Method Do You Use to Order?
Once you have your centerline length and beam width, you match them to the manufacturer’s size chart. Most universal-fit covers are sold by length ranges, and some sellers require only the length and beam to pick the right one.
The process is simple:
- Remove loose items and any detachable accessories that should not be part of the measurement.
- Measure the centerline length from the bow tip to the farthest aft point you intend to cover, keeping the tape straight and level.
- Measure the beam width at the widest point, straight across.
- Add length for any fixed rear or deck extensions.
- Match both numbers to the manufacturer’s size chart, choosing the larger size if you fall between options.
If this is your first time covering a 14-foot boat, plan for the hull style. Covers may need extra allowance for tall or protruding equipment like bow rails, trolling motors, or ladders, which can strain the fabric if they poke up too sharply. When you are ready to buy, browse tested roundups of 14-foot boat covers to see which models handle those accessories best. A cover with adjustable support poles or reinforced corners is worth the extra few dollars for a boat with lots of deck hardware.
| What to Measure | How to Measure It | What It’s For |
|---|---|---|
| Centerline length | Straight from bow tip to the farthest aft point you want covered | Sets the primary cover size |
| Beam width | Straight across the widest point, gunwale to gunwale | Ensures side-to-side fit |
| Fixed accessories | Add to length if they are permanent (swim platforms, ladders) | Prevents a cover that comes up short |
| Removable items | Remove before measuring; do not count bumpers or loose gear | Prevents an oversized, baggy fit |
| Trailer | Never measure it | Avoids a cover that is far too large |
With the right two numbers in hand, the rest of the job is simple. Match them to the size chart, pick the larger option if you are between sizes, and secure the cover with tie-downs so it stays put through wind and weather.
FAQs
Do I measure the boat cover length from the bow eye or the tip?
Measure from the very tip of the bow, not the bow eye or the trailer winch stand. The cover needs to drape over the bow point itself to keep water from pooling at the front. If your bow has a pulpit or a fixed anchor roller, include that in the length measurement.
Can I use the boat’s registration length instead of measuring it?
No. The registered length is a legal figure that often differs from the actual hull length, and it usually excludes fixed accessories like swim platforms. A 14-foot registered boat with a platform can measure closer to 15 feet from bow to stern, which changes the cover size you need.
What if my boat is between two cover sizes?
Choose the larger size. A cover that is a few inches too big can be cinched down with tie-downs and a support pole system, while a cover that is too small will strain at the seams and may tear.
References & Sources
- BoatUS. “Tips for Buying and Fitting Boat Covers.” Details the correct way to measure length and common sizing mistakes.
- West Marine. “Selecting the Right Boat Cover.” Advises choosing the larger size when between measurements.