---
title: "How to Measure Boat Length (LOA) for Storage and Slips"
description: "What LOA means to a marina, what to include (pulpit, swim platform, outboard, davits), how to measure beam and air draft, and why yards charge on the longest number."
url: https://boatparking.ca/guides/how-to-measure-boat-length/
last_updated: 2026-10-23
---

# How to measure your boat for storage

The length on your registration is often not the length a marina charges. Yards measure the space the boat takes, from the tip of the pulpit to the end of the swim platform or engine.

## The four numbers yards ask for

- LOA: Length overall: the farthest point forward to the farthest point aft, including pulpits, bow sprits, swim platforms and outboards
- Beam: The widest point, including rub rails
- Draft: From waterline to the lowest point: keel, drive or prop
- Air draft: From waterline (or trailer road height) to the highest point: mast, arch, radar, tower

## Common surprises

- Swim platforms and outboards: Often add 1 to 3 ft. Most yards charge for them.
- Slip length: For slips, many marinas charge the longer of LOA and slip length.
- Height for indoor storage: On a trailer, a cruiser with an arch may be over 12 ft. Check the door.

## Questions

**Should I round up?**

Yes, to the next foot. A yard measures when the boat arrives, and a short estimate can push you out of a reserved spot.

## Related

- [Storage by boat type](https://boatparking.ca/boats/)
- [How to compare boat storage quotes](https://boatparking.ca/guides/how-to-compare-boat-storage-quotes/)
- [Tell us about your boat](https://boatparking.ca/request-a-spot/)

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Find a spot: https://boatparking.ca/request-a-spot/ · Email: info@boatparking.ca