How to Measure Your Boat Accurately for Shipping Quotes

The biggest mistake boat owners make when requesting a shipping quote is relying on the manufacturer's spec sheet.

If Sea Ray says your boat has an 8'6" beam, you might assume you do not need oversize load permits. However, if you added an aftermarket rub rail that pushes the width to 8'8", you will suddenly be hit with thousands of dollars in surprise permit fees when the driver arrives with a tape measure.

Transport pricing is based on the absolute extremities of the vessel. Here is how to measure your boat accurately for a guaranteed quote.

1. Length Overall (LOA)

The driver needs to know how much deck space your boat requires on the trailer.

• How to measure: Measure from the absolute tip of the bow to the absolute rear of the vessel.
• What to include: You must include bow pulpits, anchor rollers, swim platforms, and outboards/sterndrives (tilted in the transport position).
• Common Mistake: Only providing the hull length. A 30-foot center console is actually 34 feet long when you add the engines and the bow pulpit.

2. Beam (Width)

This is the most critical measurement because of the 8'6" rule. Anything wider than 8 feet 6 inches triggers mandatory state permits.

• How to measure: Measure the widest point of the boat side-to-side.
• What to include: Include the rub rail, flared bow sections, or any protruding hardware that cannot be removed.
• Common Mistake: Believing the brochure. Always measure it yourself. A brochure might say 8'6", but manufacturing tolerances or aftermarket additions can easily push it to 8'7", changing the entire legal classification of the load.

3. Overall Height

Height determines route planning. Highway bridges typically have a clearance of 13 feet 6 inches. The transport trailer sits about 2 feet off the ground, meaning the boat itself cannot be taller than roughly 11 feet. If it is taller, the carrier must hire pole cars to drive ahead of the truck to measure bridges.

• How to measure: Measure from the lowest point of the keel (or the bottom of the props if they are lower) to the absolute highest point on the boat.
• What to include: Radar arches, flybridges, VHF antennas (if not removed), and bimini frames.
• Common Mistake: Forgetting the keel. You must measure from the very bottom of the boat, as that is what will rest on the trailer bunks.

If your height exceeds 11 feet, strongly consider removing the radar arch or flybridge. The cost of marina labor to remove these items is almost always cheaper than paying $5+ per mile for pole car escorts.

4. Weight

While weight is less critical than dimensions (unless it's a massive yacht), the carrier still needs to know if they require a specialized heavy-haul tractor.

• How to measure: You cannot measure this with a tape measure, but you must estimate it accurately. Look at the manufacturer's "dry weight."
• What to include: Add the weight of fuel (6 lbs per gallon), water (8.3 lbs per gallon), outboards, generators, and personal gear.
• Common Mistake: Giving the dry weight. A 10,000 lb dry boat often weighs 12,500 lbs fully loaded with fuel, water, and gear.

Once you have your exact dimensions, plug them into our calculator to see real-time 2026 freight rates: