7 oz. Polyester — Our entry-level marine cover fabric, woven from 100% polyester fiber at a 7 oz. per linear yard weight. This lighter option keeps the cover manageable for solo handling while still delivering reliable protection against sun, rain, and debris. Backed by a 3-year fabric warranty. Ships in Black.
9 oz. Polyester — Step up to our heavy-duty polyester, engineered at 9 oz. per linear yard for boats that face tougher conditions or extended outdoor storage. The denser weave adds an extra layer of defense against abrasion and weather without adding unnecessary bulk. Protected by a 5-year fabric warranty. Ships in Navy or Black.
Sunbrella® — For boaters who want the best, our Sunbrella covers use 100% solution-dyed acrylic — the same fabric trusted by marine professionals worldwide. Naturally resistant to fading, mold, and water damage, Sunbrella holds its color and integrity season after season. Covered by a 6-year fabric warranty. Ships in Black, Smoke, or Marine Blue.
Both polyester options feature solution-dyed construction, where pigment is infused into each fiber during production rather than applied to the surface afterward. This process locks color deep into the material, preventing any dye transfer to your boat’s gel coat or finish. The result is a cover that stays vibrant without bleeding or rubbing off. Our polyester is also designed to breathe — it allows moisture trapped underneath to vent out naturally, reducing the risk of mildew and keeping your boat dry. The fabric holds its form without sagging or stretching over time, stays lightweight enough for one person to handle, and stands up to prolonged UV exposure and harsh marine weather.
*The warranty periods above are provided by the fabric manufacturer and cover the material itself. For details on what’s included in the warranty for your completed cover, please see our warranty page.
Weight
37 lbs
Install
Please watch the video below for installation instructions!
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Frequently Asked Questions
Yes, our Onslow Bay 27 T-Top boat cover is custom-patterned to fit the original hull design with the factory T-Top hardtop structure. If you have factory-original rigging and a single helm station, this cover will fit precisely. Aftermarket modifications to the T-Top frame or console may require custom alterations; contact our team for guidance.
Both fabrics are UV-resistant, water-repellent, and mold-resistant. The 9oz solution-dyed marine fabric delivers 5–7 years of durability and excellent value, while premium Sunbrella acrylic lasts 8–10 years with superior color retention and is ideal for boats stored in intense sun or permanently moored in salt-air climates. For offshore tournament boats, many owners prefer Sunbrella’s longevity.
Absolutely. The Onslow Bay 27 boat cover extends from the hardtop frame down and around the entire helm station, windscreen, and console, with full bow-to-stern coverage that protects your steering, electronics, and engine hatch from UV, spray, and weather. The cover tucks snugly around the rubrail using our reinforced hem cord and adjustable tie-downs.
Yes. This T-Top boat cover protects the full perimeter, including lower gunwale runs and engine hatch rim from sun fade and salt spray. The cover does not extend over the cockpit floor, which allows any water that enters the cover to drain safely away.
We do not recommend trailering with the cover on, as wind loads and road spray can stress seams and straps, and debris kicked up from the trailer can damage the fabric. For trailering protection, consider removing the cover or using a boat tarp secured with ratchet straps.
Each cover ships with stainless steel tie-down straps, adjustable attachment hardware, and care instructions. Perfect Fit covers are backed by a 2-year manufacturer warranty against defects in materials and workmanship. Damage from accidents, improper storage, or failure to use tie-downs is not covered.
The cover is water-resistant with a durable water-repellent (DWR) finish that causes rain and spray to bead and roll off. It is intentionally not sealed waterproof — a fully sealed cover on the 27's 9'5" beam would trap a substantial volume of humid air underneath, creating ideal conditions for mildew on the upholstery, electronics, and gel coat. The breathable construction allows air circulation while blocking direct water contact, which is the right balance for an offshore center console that may sit covered at a dock or lift between tournament runs.
Installation takes under five minutes working solo. Drape the cover over the T-Top frame from the hardtop attachment points, letting the fabric fall naturally around the support legs. Pull the cover forward to the bow and aft past the twin-engine transom, then down each side. Secure the hem cord along the rub rail and fasten the adjustable tie-down straps underneath the hull. The cover is patterned to the 27's 26'11" length and 9'5" beam, so everything aligns without forcing or guesswork.
The 9 oz solution-dyed polyester is available in Navy, Black, and Charcoal — three versatile marine colors that complement any hull scheme. The 7 oz polyester offers the same palette at a lighter weight. Upgrading to Sunbrella acrylic unlocks additional shades including Captain Navy, Pacific Blue, and Forest Green. All fabrics use solution-dyed fiber where pigment is embedded during manufacturing, so the cover resists UV fading even on the 27's large surface area that catches significant direct sunlight.
Shipping is a flat rate of $30 per cover to anywhere in the continental United States. Orders typically ship within 1 to 2 business days via ground carrier. The Onslow Bay 27 cover arrives folded in a compact box with all mounting hardware included — stainless steel snaps, adjustable tie-down straps, hem cord, and T-Top attachment fittings — ready for immediate installation.
Make: Onslow Bay
Model: 27
Onslow Bay 27 Offshore Edition T-Top Boat Cover
The Onslow Bay 27 Offshore Edition is a nimble yet capable center console that brings tournament-grade construction to serious fishermen who demand reliability in rough Atlantic conditions. At 26’11” with a 9’5” beam and 4,500 lbs of dry weight, this 212-gallon capacity platform performs on twin engines up to 700 HP, delivering the speed and handling needed for offshore runs to the shelf. The signature 24° deadrise hull design cuts through chop with the authority Brad Knight’s 20-year boatbuilding legacy demands. Our custom-fitted Onslow Bay 27 T-Top boat cover provides full-length coverage from the hardtop down to the rubrail, protecting the entire helm station, gunwales, and windscreen from UV damage, salt spray, and inclement weather during off-season storage and everyday mooring.
The Onslow Bay 27 T-Top cover is engineered with reinforced double-stitched seams at all stress points, a strong hem cord along the rubrail for secure, wrinkle-free tension, and stainless steel tie-down straps with adjustable attachment points to lock the cover against wind and storage-yard elements. Choose from our durable 9oz solution-dyed marine fabric, which resists UV fading for 5–7 years of reliable performance, or upgrade to premium Sunbrella acrylic for 8–10 years of superior color retention and weatherproof protection. Both fabrics are inherently water-repellent, quick-drying, and formulated to resist mold and mildew in humid saltwater environments—essential for boats moored in the Carolina sounds and Atlantic coastal waters where Onslow Bay legends are born.
Built for Inshore Power and Offshore Range
Whether you’re running drum tournaments in the Neuse River or making blue-water runs for king mackerel and wahoo off the continental shelf, the Onslow Bay 27 delivers the speed, stability, and fuel efficiency to get you home. At 24° deadrise, this hull handles beam seas with grace and cuts through confused chop without pounding the crew or equipment. The open console layout and wide side decks give you room to work lines and jig, while the 212-gallon fuel capacity and twin-engine redundancy ensure you’ll never be stranded far from the barn. Your Perfect Fit Onslow Bay 27 boat canvas protects this investment through winter layups and keeps your helm station and running gear pristine between fishing trips—no fading, no weather staining, no rust on the engine compartment rim.
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