Sunglasses for Boating and Sailing: Polarization, Grip, Spares
Sunglasses for boating and sailing: why polarized lenses help on water, best lens colours, frame fit on a moving deck, cords, spares and salt care.
5 min readBy IGIOO Optical
In this story
The best sunglasses for boating and sailing have polarized lenses to cut glare off the water, a frame that stays put when the deck moves, and enough coverage to block light coming in from the sides. Add a cord or strap and a spare pair in your bag, and you are ready for a full day on the water.
Light on open water behaves differently from light in town. It bounces up from the surface, reflects off white hulls and sails, and reaches you from almost every direction. This guide walks through the choices that matter once you leave the dock.
Why water glare is different
On land, most bright light comes from above. On a boat, a large share comes from below and from the side, reflected off waves, wet decks and fibreglass. That reflected light is mostly horizontally polarized, which is exactly what a polarized lens is built to filter.
The practical result: many people find the sea looks calmer, the horizon reads more clearly and they squint less on a long passage. Sailors also like that polarized lenses can make it easier to read the surface, for example to spot a gust darkening the water ahead.
Polarized lenses and boat instruments
One thing to know before you buy: polarized lenses can make some LCD screens look dark or patchy at certain angles. That includes some chartplotters, depth sounders and phone screens. It is not a fault in the lens, just two filters crossing each other.
- Tilt your head slightly if a display goes dark; it usually comes back.
- Check your own instruments with the glasses on before a long trip.
- If a key display stays unreadable, keep a non-polarized spare for navigation and wear the polarized pair the rest of the day.
Shop our full range of polarized sunglasses to compare shapes and lens colours.
Lens colour and tint on the water
Lens colour changes how the sea, sky and other boats look. There is no single right choice, but each tint has a typical use.
| Lens colour | How it looks on the water | Good for |
|---|---|---|
| Grey | Keeps colours natural, darkens evenly | Bright, open-sea days and long passages |
| Brown / amber | Warmer view, more contrast on the surface | Changing light, coastal sailing, lakes |
| Green | Balanced contrast with fairly true colours | Mixed sun and cloud |
| Light / glacier tints | Lets more light through | Overcast days, early mornings, evening returns |
If you only take one pair, a darker grey or brown lens covers most sunny days afloat. Keep a lighter pair in mind if you often head out early or come back at dusk.
Frame fit when the deck moves
A boat heels, rolls and bounces. Sunglasses that feel fine at a café table can slide down your nose the moment you lean over to trim a sheet. Look for these points:
- Snug temples: the arms should rest along the side of your head without pressing, and curve gently behind the ears.
- Stable bridge: a well-fitting nose pad or acetate bridge that does not slip when your skin is wet with spray or sunscreen.
- Coverage: a larger lens or a frame that sits closer to the face reduces light sneaking in at the sides.
- Sturdy hinges: spring hinges or multi-barrel metal hinges cope better with being pulled on and off with one hand.
Not sure which size fits? Our frame size guide shows how to read lens width, bridge and temple numbers against a pair you already own.
Shelton is a large-fit acetate frame with spring hinges and generous coverage. Jena C06 has a 49 mm lens width, a one-piece nose pad and five-barrel metal hinges with an embedded wire core. Monterey Amber Dusk pairs a slim gold metal frame with tortoise acetate and 51 mm round lenses, a good match for smaller and medium faces.
Grip, cords and spares
Every sailor has a story about a pair of sunglasses lost over the side. A few simple habits help:
- Use a retainer cord or strap. It lets the glasses hang around your neck when you take them off and catches them if they are knocked off your face.
- Pack a spare pair. An older pair in a dry bag means a lost pair does not end the day.
- Keep a hard case on board. Loose glasses on a cockpit seat get sat on or slide into the bilge.
- Take them off for swims. Diving in with your sunglasses on is the fastest way to lose them.
Prescription sunglasses for boating
If you wear glasses, juggling clip-ons or fit-overs on a moving deck is fiddly. Prescription sun lenses in a frame you like give you clear vision of the shoreline, buoys and other boats with one pair. Most of our sunglasses can be ordered with prescription sun lenses, and you choose your lens type and tint in our lens selector. Browse prescription sunglasses or read our guide on measuring your pupillary distance before you order.
Caring for sunglasses after a day at sea
Salt spray dries into fine crystals that can scratch a lens if you wipe it dry. When you get back to the dock:
- Rinse the lenses and frame under lukewarm fresh water.
- Dry them with a clean microfibre cloth rather than a shirt or towel.
- Wipe the hinges too, as salt can collect there.
- Do not leave the glasses on a hot dashboard or in direct sun on deck for hours.
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Frequently asked questions
Are polarized sunglasses necessary for sailing?
They are not required, but most people on the water prefer them. Polarized lenses are designed to reduce reflected glare from the surface, which many sailors find makes long days more comfortable.
Why does my chartplotter look black through my sunglasses?
Some LCD screens use their own polarizing filter. When it lines up at a right angle with your lenses, the screen can look dark. Tilting your head usually brings the display back.
What lens colour is best for boating?
Grey keeps colours true and suits bright, open water. Brown or amber adds contrast in changing light. A lighter tint helps on cloudy mornings and evenings.
Can I get prescription lenses in boating sunglasses?
Yes. Choose a frame, then add prescription sun lenses in our lens selector. Check our prescription guide if you are unsure about your numbers.
Find your pair for the water
Pick a polarized lens, a frame that fits snugly, and a cord to keep it on board. Explore our polarized sunglasses, or browse men's sunglasses and women's sunglasses by shape. Add your prescription in a few clicks with our lens selector.
