Boat name plaque layout and lettering guide

Use the name alone for a helm, cabin, dinghy or gift plaque. Add the hailing port when the plaque copies the look of the stern lettering or the owner wants the home port shown. A name-only plaque can use bigger letters on the same plate, so it reads from farther away.

If you add a hailing port, write it the way the boat uses it, such as "Annapolis, MD." For documented recreational boats, the official marking puts the name and hailing port together on the hull, and the hailing port must be a US place that includes the state. A decorative plaque can match that wording, but it does not replace the marking. Inside the cabin, many owners prefer the name with a short line such as the year launched.

• Helm or cabin: name only, or name plus year.
• Transom-style replica: name plus hailing port.
• Gift for a new owner: name plus a short line, such as a launch date.
• Dock or slip: name plus slip number, using the Dock & Slip Number Sign style.

Plan letter height from the farthest distance someone needs to read the name. Our planning rule of thumb is about one inch of capital-letter height for every ten feet of viewing distance, and block letters do better than script. It is a starting point, not a standard. Harbor Plaque Co confirms the size on an actual-size proof.

A helm plaque read from three or four feet can use small letters. A plaque meant to be read from the dock at 30 feet needs about three-inch letters by that rule. Our Custom Boat Nameplate is listed at 8 to 16 inches wide, so a long name at large letter heights may not fit. Shorten the line, use a second line, or ask whether we can quote a larger plaque.

• 3 to 5 feet (helm, cabin door): about 1/2 inch letters
• 10 feet (cockpit, across a small dock): about 1 inch
• 20 feet (dock walkway): about 2 inches
• 30 feet and up (across the slip): about 3 inches or more

Block and simple serif letters are easier to read at a distance, in glare and at an angle. Script looks classic but loses legibility when letters are small or the name is long. A good compromise is a script name with a block hailing port, with the name kept short and the script letters large.

Avoid very thin strokes, tight letter spacing and all-caps script. Each of these makes letters blur together from the dock. If you love a script font, test it: print the name at actual size, tape it where the plaque will go, and step back to the distance you care about. If you cannot read it in two seconds, choose a bolder style or a bigger plaque.

Our boat nameplates are flat plates in metal or composite, so they suit flat or nearly flat spots best. Many transoms and cabin sides curve. Measure the spot and check the curve before ordering. Harbor Plaque Co can size a plaque to fit a flatter area, and the installer decides spacers and fasteners.

To check, hold a straight edge across the spot and measure the largest gap under it. Send us the width and height of the flat area, the gap, and a photo with a tape measure in view. Mounting hardware and installation are quoted separately. Tell us whether the plaque will see salt spray, fresh water or only cabin air, so we can suggest a material for that location.

For a vessel documented only for recreation, federal rules require the name and hailing port marked together on a clearly visible exterior part of the hull. The letters must be clearly legible Latin letters or Arabic or Roman numerals at least four inches high, made with any durable means. The rule is 46 CFR 67.123.

The hailing port must be a US place that includes the state, under 46 CFR 67.119. Documented boats also need the official number, preceded by "NO.," in block numerals at least three inches high on an interior structural part of the hull, fixed so removal would be obvious, under 46 CFR 67.121. A documented name cannot be changed without prior approval from the Director of the National Vessel Documentation Center, under 46 CFR 67.117.

A decorative Harbor Plaque Co nameplate does not replace any of these markings, and we do not say it meets them. If you want a plate to serve as the hull marking, check with the National Vessel Documentation Center first and tell us the requirement you need to meet. State registration numbers are a separate rule: 33 CFR 173.27 requires block characters at least three inches high on each side of the forward half of the boat, contrasting with the hull.

These examples are grouped by length so you can see how a name fits before you choose a plaque. Counts include letters, spaces and punctuation. Short names allow the biggest letters on a given plate. Long names need smaller letters or two lines. All names below are original examples. Confirm the real fit on your proof.

Paste your own name and hailing port into the Engraving Text Length Checker to compare them.

• Short names (under 8 characters):
• "Osprey" (6 characters)
• "Kestrel" (7 characters)
• "Driftly" (7 characters)
• "Tidal" (5 characters)
• "Low Key" (7 characters)
• "Salt Jr" (7 characters)
• "Ripple" (6 characters)
• Medium names (8 to 14 characters):
• "Second Wind" (11 characters)
• "Quiet Hours" (11 characters)
• "Knot Working" (12 characters)
• "Sea Biscuit II" (14 characters)
• "Lucky Penny" (11 characters)
• "Blue Heron" (10 characters)
• "Weekend Pass" (12 characters)
• Long names (over 14 characters, plan small letters or two lines):
• "Northern Promise" (16 characters)
• "Afternoon Delight" (17 characters)
• "Grandpa's Retirement" (20 characters)
• "Miss Caroline Rose" (18 characters)
• "Reel Therapy Two" (16 characters)
• Hailing port lines:
• "Annapolis, MD" (13 characters)
• "Bayfield, WI" (12 characters)
• "Newport, RI" (11 characters)
• "Port Aransas, TX" (16 characters)
• "Saint Petersburg, FL" (20 characters)
• "Sausalito, CA" (13 characters)
• "Charleston, SC" (14 characters)

In this made-up example, an owner wants a helm plaque reading "Miss Caroline Rose" (18 characters) with "Saint Petersburg, FL" (20 characters) below. The plaque will be read from about four feet. The owner first picks a script font for both lines and a 10-inch plate.

At that width, both long lines force small script letters. The owner tests a printout at actual size and finds the hailing port hard to read. The final layout keeps the name in script on one line, sets the port in block capitals as "ST. PETERSBURG, FL" (18 characters), and moves to a 14-inch plate. The boat is documented, so the owner keeps the four-inch hull lettering as the legal marking and treats the plaque as decoration only. Harbor Plaque Co sends an actual-size proof for approval.