Sea Hunt Ultra 255 SE — Quick-Reference Specs
- Boat Model: Sea Hunt Ultra 255 SE
- Cover Type: T-Top Mooring Cover
- LOA: 24'11"
- Beam: 8'9"
- Dry Weight: 4,600 lbs
- Engine: Single Yamaha F300 (max 300 HP)
- Fuel Capacity: 120 gallons
- Deadrise: 18° at transom
- Hull Type: Deep-V fiberglass
Cover Features
- Fit: Custom-fitted for the Sea Hunt Ultra 255 SE T-top
- Attachment: Underside edges of factory T-top frame
- T-Top Roof: Stays fully exposed
- Coverage: 85–90% of hull sides, fully enclosing the outboard engine
- Fabric Options: 9oz marine canvas (most popular) or Sunbrella
- Construction: Reinforced stitching at all stress points with stainless snaps
- Warranty: Multi-year warranty against UV and weather damage
Additional information
Choose Your Cover Fabric
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.
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 | 35 lbs |
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Install
Please watch the video below for installation instructions!
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Frequently Asked Questions
The Ultra 255 SE measures 24 feet 11 inches LOA with an 8-foot 9-inch beam, a deep-V hull with 18-degree deadrise at the transom, and weighs 4,600 pounds dry. Our cover is patterned specifically for these dimensions — it accounts for the 255 SE's wider beam, Carolina bow flare, T-top leg spacing, and console position. The fit drapes from the T-top frame down to enclose approximately 85–90 percent of the hull sides with no excess material to pool water or catch wind.
Yes. The Ultra 255 SE is powered by a single Yamaha F300 outboard rated at 300 horsepower. Our cover extends from the bow past the transom and completely encloses the F300 engine cowling, powerhead, lower unit connection point, and all transom mounting hardware. This protects the engine from UV degradation that cracks plastic cowlings, salt corrosion on exposed metal components, and water intrusion during extended storage periods.
The 255 SE's 120-gallon fuel tank gives it exceptional offshore range — roughly 230 to 250 miles at cruising speed. That range means this boat frequently spends extended time in harsh saltwater environments, docked at offshore marinas or trailered between distant tournament stops. Our Sunbrella marine-grade fabric handles constant salt exposure, blocks UV rays intensified by water reflection, and resists the mold and mildew that thrive in humid coastal storage. The investment in a boat with this kind of range deserves protection that matches.
The cover features a separate zippered section that fits around the T-top support legs. The T-top roof remains fully exposed on top — only the underside edges of the frame serve as attachment points. This lets you install or remove the cover without fighting the hardtop structure. The 255 SE has a larger T-top frame than smaller Ultra models, and our cover is patterned for the specific leg spacing and frame dimensions of this boat — not adapted from a smaller pattern.
Yes. The Ultra 255 SE typically comes equipped with a large Garmin GPSMAP touchscreen display, VHF radio, and additional helm electronics standard on Ultra-series boats. Our cover provides complete coverage over the entire helm station, shielding screens from UV exposure that cracks displays, fades LCD panels, and degrades the waterproof gasket seals that keep water out of sensitive components. This is especially critical for the premium electronics investment that comes with the Ultra series.
The Ultra 255 SE has specific dimensions no generic cover can match. The T-top leg spacing, console rake angle, gunwale height, 8-foot 9-inch beam, bow flare profile, and Yamaha F300 cowling shape are all unique to this model. A universal 25-foot cover will leave gaps where wind and rain penetrate, pool water on top from poor fit, and flap loose in coastal winds because it was not designed for the 255 SE's exact hull geometry. Our cover is cut from the factory specifications for this specific boat.
Yes. At 4,600 pounds dry weight, the 255 SE generates significant wind load during highway transport. Our cover is built to handle it — adjustable tie-down straps run beneath the hull and cinch tight along the gunwales, preventing wind lift at sustained highway speeds. Reinforced stitching at every stress point handles vibration and wind pressure during extended towing. The cover fits flush against the hull to minimize drag and prevent the flapping that destroys lighter covers over time.
A T-top mooring cover uses the boat's fixed hardtop frame as its primary structural support. Unlike a full snap-on cover that requires removing the T-top, or a universal tarp that sags and pools water, a T-top mooring cover attaches to the underside edges of the hardtop. The cover drapes down to protect the cockpit, console, and gunwales while the T-top roof stays fully exposed above. A separate zippered section accommodates the T-top legs. This provides secure, wind-resistant coverage that protects your investment without the problems of generic alternatives.
We offer three fabric tiers to match your storage conditions and budget. The 7 oz polyester is our entry-level option with a 3-year warranty, shipping in black. The 9 oz polyester is our most popular among Sea Hunt owners — the denser weave delivers superior abrasion resistance and UV blocking with a 5-year warranty, available in navy or black. Our premium Sunbrella uses 100% solution-dyed acrylic trusted by marine professionals worldwide, carrying a 6-year fabric warranty in black, smoke, or marine blue. All polyester options use solution-dyed construction so pigment cannot transfer to your gelcoat.
Select your model year, storage method (trailer, lift, dry stack, or dock), T-top type (hardtop, hardtop with aft support bars, or canvas top), engine make and horsepower, and any aftermarket accessories like jack plates or Power Poles. Our design team combines these details with the 255 SE's factory specifications to pattern your cover for a precise fit. If you have aftermarket modifications — such as an upgraded engine, non-standard electronics, or custom bow rails — note them in the order comments and our team will adjust the pattern accordingly.
Sea Hunt Ultra 255 SE T-Top Boat Cover – Serious Protection for a Serious Offshore Machine
The Sea Hunt Ultra 255 SE sits at the upper end of the Ultra lineup — a true offshore center console that demands purpose-built protection. At nearly 25 feet long with an 8-foot 9-inch beam, a deep-V hull with 18-degree deadrise, and a 120-gallon fuel tank, the 255 SE was designed for long-range offshore runs and all-day fishing. Our custom T-top mooring cover is patterned specifically for the Ultra 255 SE’s hull dimensions and factory T-top frame, providing complete bow-to-stern coverage while the T-top roof stays fully exposed above.
Why the Ultra 255 SE Needs a Purpose-Built Cover
At 4,600 pounds dry weight with a single Yamaha F300 outboard, the 255 SE is a substantial investment in offshore capability. The Ultra series features premium upholstery, integrated Garmin electronics, refined hull design, and the kind of elevated fit and finish that separates it from standard Sea Hunt models. UV exposure fades premium gelcoat, cracks high-end vinyl seating, and degrades waterproof seals on electronics — problems that compound quickly in the saltwater environments where this boat lives. Owners of other Ultra-series boats like the Sea Hunt 229 Ultra CC understand that a generic cover cannot account for the specific T-top geometry, console position, and engine cowling profile unique to each model.
How the Custom T-Top Cover Fits Your 255 SE
The cover attaches directly to the underside edges of the factory T-top frame, then drapes down to enclose approximately 85–90 percent of the hull sides while fully covering the Yamaha F300 outboard. A separate zippered section accommodates the T-top support legs so you can install or remove the cover without fighting the hardtop structure. Reinforced stitching at every stress point, stainless steel snaps, and adjustable tie-down straps along the gunwales keep everything locked down through coastal winds and seasonal storms. The 255 SE’s wider 8-foot 9-inch beam means more cover material under tension — our reinforced construction handles that load without sagging or stretching.
Built for Extended Marine Storage
Whether docked at an offshore marina, stored on a heavy-duty lift, or trailered between tournament stops, the 255 SE stays protected from sun, rain, salt spray, and airborne debris. Our 9 oz marine canvas is the most popular choice — the heavier weave provides superior abrasion resistance and UV blocking while still breathing to prevent trapped moisture. For boaters who want the absolute best, our Sunbrella option delivers unmatched UV and mold resistance with a 6-year fabric warranty. The same construction and materials protect similar mid-range Sea Hunt platforms like the Sea Hunt 240 T-Top. Available in navy, black, and charcoal gray — purpose-built for the Ultra 255 SE and nothing else.
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