Tideline 365 Specifications
- Length Overall (LOA): 36'5"
- Beam: 11'0"
- Dry Weight: ~9,200 lbs
- Engine: Triple/quad outboards, 1,200 HP max
- Fuel Capacity: 450 gallons
- Draft: N/A
- Hull Type: Power catamaran center console
Cover Features
- Fabric Options: 9oz solution-dyed marine fabric or premium Sunbrella acrylic
- Coverage Type: T-Top cover wraps hull below hardtop; hardtop remains exposed
- Construction: Reinforced stitching, hem cord at rubrail, adjustable tie-down straps
- Durability: Solution-dyed fabric (5-7 years); Sunbrella acrylic (8-10 years)
- Fit: Custom-fitted to 36'5" Tideline 365 specifications
- Protection: UV-resistant, water-repellent, weatherproof
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 | 50 lbs |
|---|
Install
Please watch the video below for installation instructions!
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Frequently Asked Questions
The Tideline 365 T-Top cover is available in 9oz solution-dyed marine fabric for reliable 5-7 year protection, or premium Sunbrella acrylic for 8-10 years of UV and weather resistance. A lighter 7oz option is also available. All fabrics are solution-dyed through the fiber for colorfastness and long-term durability.
Yes. The Tideline 365 T-Top cover is pattern-cut with reinforced cutouts that wrap around the T-Top support legs. The cover drapes from the hardtop frame down to the rubrail, leaving the hardtop roof exposed on top while fully enclosing the hull, console, and cockpit below — even across the 365's oversized 11-foot beam.
Installation takes one person under five minutes. Drape the cover over the bow, align the T-Top cutouts around the support legs, pull the fabric aft past the console and leaning post, then secure the adjustable strap-and-buckle tie-downs along the gunwale. No tools required, even on this oversized catamaran platform.
Yes. The Tideline 365 T-Top cover features reinforced stitching and a hem cord system designed for highway-speed trailering. The adjustable straps hold the cover tight against the hull at speed, preventing billowing or flapping during transport.
Absolutely. The Tideline 365 T-Top cover creates a complete barrier over the helm console, fishfinder, GPS, VHF radio, leaning post cushions, and all cockpit upholstery across the full 11-foot beam. The water-repellent fabric blocks UV rays, rain, salt spray, and airborne debris that cause fading and deterioration.
Every Tideline 365 T-Top cover includes a 2-year manufacturer warranty covering defects in materials and workmanship. The solution-dyed fabrics are engineered for 5-7 years of service life, and the Sunbrella option extends that to 8-10 years under normal conditions.
The Tideline 365 T-Top cover is water-resistant with a DWR (durable water repellent) finish that causes rain and spray to bead and roll off the fabric surface. The cover is also breathable, allowing trapped moisture and condensation to escape rather than pooling underneath — especially important in the catamaran tunnel area between the twin hulls.
Yes. This cover is designed to fit all standard production years of the Tideline 365 equipped with a factory T-Top. Since the Tideline 365's hull dimensions and T-Top mounting points have remained consistent across production runs, the cover fits all model years without modification.
The 9oz solution-dyed marine fabric is available in Navy, Black, and Charcoal. The premium Sunbrella acrylic line offers an expanded selection of colors. All colors are solution-dyed through the fiber for lasting colorfastness that won't fade, even in harsh saltwater sun.
Shipping is a flat rate per cover for delivery anywhere in the continental United States. Orders typically ship within 1-2 business days and arrive via standard ground carrier.
Tideline 365 T-Top Boat Cover — Massive Catamaran, Maximum Coverage
The Tideline 365 is a 36’5″ center console catamaran with an 11’0″ beam, weighing 9,200 pounds dry and rated for up to 1,200 horsepower across triple or quad outboard configurations. Tideline Boats builds large offshore catamarans for anglers and captains who demand the range, stability, and deck space that only a full-size power cat can deliver. With a 450-gallon fuel tank, the 365 can run canyon trips, multi-day offshore campaigns, and long-range island hops that would drain most monohull fuel systems twice over. The 11-foot beam provides a deck area comparable to boats over 40 feet in length, and the catamaran hull delivers the stable, dry ride that makes extended offshore days less punishing on crew and equipment. This custom-fitted T-Top cover from Perfect Fit Boat Covers wraps the entire hull below the hardtop, protecting the Tideline 365’s massive cockpit, helm electronics, and premium gelcoat from UV exposure, salt corrosion, and weather damage during extended storage and between trips.
Tailored to the 365’s Oversized Catamaran Layout
The Tideline 365 packs an extraordinary amount of fishing and cruising infrastructure into its 36’5″ catamaran platform — an oversized cockpit with room for a full tournament crew, a large center console with a wraparound helm station, a padded leaning post with integrated tackle and cooler storage, multiple livewells, insulated fishboxes, and rod holders positioned for trolling, bottom fishing, and kite fishing simultaneously. The 11-foot beam means this cover spans significantly wider than standard T-Top covers, and the pattern is cut specifically to accommodate the catamaran hull shape, the T-Top support legs, and the triple or quad outboard transom configuration. Adjustable strap-and-buckle tie-downs and a continuous hem cord at the rubrail secure the cover across the full width of both hulls. Installation takes one person under five minutes even on this oversized platform, and the reinforced construction is built to handle the loads — the same engineering approach used on smaller platforms like the Competition 25 T-Top cover.
Protection That Matches Tideline’s Offshore Pedigree
Fabric options include 9oz solution-dyed marine fabric rated for five to seven years of UV and weather resistance, or premium Sunbrella acrylic that extends coverage life to eight to ten years. On a boat with the Tideline 365’s deck area, fabric quality matters even more — every additional square foot of coverage is another square foot exposed to UV, salt, and weather. Both fabrics feature a DWR water-repellent finish, mildew resistance, and breathability to prevent moisture buildup in the catamaran’s tunnel area. Double-stitched seams and a hem cord system provide the structural integrity needed for an 11-foot-wide cover. Every cover ships with a 2-year manufacturer warranty, and anglers protecting comparable offshore platforms will find the same build quality on the Everglades 295 CC T-Top cover.
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