Yachts for sale / Tideline 365 Offshore

2020 Tideline 365 Offshore

Vero Beach, FL, US 36.4 ft · 11 ft' beam
Asking
$397,000
$396,000
Reduced by $1,000
Our Thoughts

The 2020 Tideline 365 Offshore represents a rare convergence of design philosophy and engineering: a 36.42-foot power catamaran that fuses Robert Ullberg's custom sport-fisher aesthetics with the stability and shallow-draft advantages of a twin-hull platform. Powered by twin Suzuki DF350 outboard engines delivering 700 combined horsepower, this vessel achieves cruising speeds near 30 knots with a 480-gallon fuel capacity and reported range exceeding 600 nautical miles—capability that positions it well above typical center-console performance in its class.

The Hull and Ride

The Tideline's asymmetrical twin-hull design creates a distinctly different boating experience than monohull competitors. The catamaran's two-point stance tracks predictably in a seaway, and the 11-foot beam combined with a draft of just 1.67 feet opens access to skinny water that most offshore-capable vessels cannot reach. The construction employs hand-laid vinylester glass with foam coring and aluminum-reinforced grid, producing a platform that feels substantial underfoot while remaining trailerable—the hardtop tower folds down in approximately 10 minutes with four allen screws, and a trailer is included with the sale.

Deck Configuration and Fishing Setup

The 365 Offshore's cockpit is purpose-built for serious fishing operations. Twin 45-gallon pressurized livewells flank the helm, while two in-deck 88-gallon wells provide bait separation and conditioning. Two insulated 815-quart fish boxes and a centerline 688-quart coffin box—all macerated and ready for ice—deliver over 2,300 quarts of total insulated fish capacity. The forward casting platform converts to chaise seating with removable backrests, and the coffin box lid doubles as a sun lounger, balancing tournament functionality with family comfort. Recessed handrails and padded combing enhance safety across the high-freeboard design.

Helm, Steering, and Navigation

The helm features a wide, glare-free dash engineered for triple multifunction displays. Joystick control (Optimus 360 or Mercury Joystick configuration) provides intuitive maneuvering in tight spaces. The electronics package includes three Garmin multifunction displays—a Garmin 8616XSV 16-inch primary MFD, Garmin GMR 1224 xHD2 radar, and Garmin GXM 54 weather antenna—paired with dual ICOM M506 VHF radios, Garmin GSD 26 black box sounder, and B175HW and R599LM transducers. This integrated suite delivers comprehensive situational awareness for offshore navigation and fish-finding.

Factory and Owner Upgrades

Factory enhancements include a custom seachest with four-pump capacity, 20-gallon freshwater washdown system, OceanGrip bolsters, Laveo dry-flush toilet system, battery charger/maintainer, and wired electric reel outlets (4). The current owner has invested substantially in additional equipment: a custom hardtop from Shearline with electric teaser reels, Gemlux Bluewater outriggers, SIONYX Nightwave ultra low-light marine camera, 3,000-watt inverter for AC outlets, dual LP reel outlets, a 36-volt Garmin trolling motor with three LiF

Provided listing description Click to read the original broker text

Introducing the 2020 Tideline 365 Offshore, a remarkable power catamaran that seamlessly blends performance and comfort. With an overall length of 36.4 feet, this vessel boasts a sleek fiberglass hull designed for stability and efficiency on the water yet easily trailerable as the tower can easily be folded down in less than 10 mins. Equipped with twin Suzuki DF350 outboard engines, each delivering an impressive 350 horsepower, it offers exhilarating cruising speeds of up to 30 knots and an extensive range of 630 miles, perfect for adventurous voyages. The 365 Offshore features advanced joystick control for effortless maneuverability, complemented by an electric windlass for convenient anchoring. This catamaran is designed for those who appreciate both speed and luxury, making it an ideal choice for exploring coastal waters or enjoying leisurely outings. With its modern design and robust engineering, the Tideline 365 Offshore promises an exceptional boating experience for enthusiasts and families alike. 2020 Tideline 365 Offshore — Twin-Powered Predator With the Soul of a Custom Sport-FisherWhen a 36-footer cracks 60 mph yet still softens a six-foot head sea, you know you’ve left ordinary center-consoles in the wake. This 2020 Tideline 365 Offshore marries Robert Ullberg’s custom-boat lines with an offshore catamaran’s two-point stance, then adds the brute force of twin Suzuki 350’s. The result: a bone-dry, razor-smooth ride that cruises close to 40 mph and tops out north of 60 mph while sipping fuel from her cavernous 480-gallon tanks — range and speed few 40-foot monohulls can match. Performance & RideThe Tideline’s asymmetrical twin hulls track like rails and cushion landings so thoroughly that offshore runs feel like a bay-day joy-ride. Twin 350s push 700 hp through the 9,200-pound platform, keeping draft to just 18-20 inches for skinny-water access while delivering blue-water stability that rivals much larger boats. Deck Layout Built for Battle and ComfortFrom the transom aft-facing mezzanine seats you step into a cockpit engineered for serious crews: twin 45-gallon pressurized livewells plus two in-deck 88-gallon wells mean you can carry pitch-baits, goggle-eyes, and sword baits without compromise. Two insulated 815-quart fish boxes flank a mammoth 688-quart coffin box forward, all macerated and ready to ice tournament totals. Helm & TechnologyA wide, glare-free dash swallows triple MFDs, while Optimus 360 or Mercury Joystick (your choice) makes the big cat dance into tight slips. Massive under-console volume hides batteries, breakers, and rigging in yacht-class order, leaving room for an electric head or dry-flush unit. Forward Lounge & Family SpacesForward, a raised casting platform converts to chaise seating with removable backrests, and the coffin box lid doubles as a sun-lounger. Wide 11-foot beam and high freeboard keep kids secure; recessed handrails and padded combing bolster comfort from bow to stern. Construction HighlightsHand-laid vinylester glass, foam coring, and an aluminum-reinforced grid give the 365 a monolithic feel, while integrated transom brackets free up the entire aft cockpit. Every hatch is finished on both sides, gasketed, and drains overboard;Gemlux hardware and through-bolted backing plates speak to the brand’sCarolina-custom DNA. Why This Tideline 365 Stands Out Twin 350 hp package – fast, most fuel efficient setup available on a 36-foot cat. 480 gal fuel + catamaran efficiency = canyon range without auxiliary bladders. Over 2,300 quarts of insulated fish capacity – bring the whole tournament home. Twin 45-gal and twin 88-gal livewells plus optional tuna tubes keep every bait alive and separated. Draft under two feet lets you slide across the flats or nose onto the beach after chasing sails offshore. Tower is able to be folded down in 10 minutes with 4 allen screws. Trailer includedThis 2020 Tideline 365 Offshore with twin 350s is equal parts missile and mothership: built to punch through confused inlets at dawn, sprint 60 miles to the bite, and still bring the family on an evening sandbar picnic in comfort. If you’re searching for a listing that checks speed, fishability, and family credentials in one turn-key package, your next ride is waiting on this deck.

2020 Tideline 365 Offshore: Twin 350 Power Catamaran Built for Offshore Speed and Tournament Fishing
Located in Vero Beach, Florida, this 2020 Tideline 365 Offshore represents a rare convergence of performance engineering and serious fishing capability. At 36.42 feet in length with an 11-foot beam, this twin-hulled power catamaran delivers the shallow-draft efficiency of a flats boat, the stability of an offshore platform, and the raw speed of a tournament-grade fishing machine—all in a package that remains trailerable with a folding tower system.
Overview: The Catamaran Advantage
Tideline's 365 Offshore model exemplifies modern catamaran design principles applied to the American sportfishing tradition. The asymmetrical twin-hull configuration creates a two-point running surface that tracks predictably through confused seas while maintaining a draft of just 1.67 feet—shallow enough for skinny water yet deep enough for blue-water stability. The fiberglass construction employs hand-laid vinylester resin, foam coring, and an aluminum-reinforced grid, resulting in a monolithic hull structure that resists flexing and noise while supporting the weight of twin Suzuki DF350 outboard engines without compromise. The power package delivers 700 total horsepower through a pair of Suzuki 350s, each rated at 350 hp. This configuration represents the most fuel-efficient twin-engine setup available on a 36-foot catamaran platform, a critical advantage when operating from a 480-gallon fuel capacity. The broker's specification of a 30-knot cruising speed aligns with typical catamaran efficiency curves, while the published top speed exceeds 60 mph—performance that few conventional monohull center consoles can replicate while maintaining fuel economy. With 480 gallons of fuel and the inherent efficiency of a catamaran hull at cruise, the 365 Offshore achieves an operational range of approximately 630 miles, enabling extended offshore runs to canyons, deep-water structure, or distant anchorages without auxiliary fuel bladders.
Helm and Joystick Control System
The helm station features a wide, glare-resistant dash designed to accommodate triple multifunction displays—in this case, a Garmin 8616XSV 16-inch primary MFD paired with secondary electronics for navigation, sonar, and radar integration. The Garmin GMR 1224 xHD2 radar provides high-definition target acquisition and weather imaging, while dual ICOM M506 VHF radio systems ensure redundant communication and safety compliance for offshore operation. The joystick control system—selectable between Optimus 360 or Mercury Joystick depending on owner preference—transforms handling characteristics from conventional single-lever outboard operation into intuitive, all-axis maneuvering. This upgrade simplifies docking, anchoring, and tight-quarters navigation, allowing a single operator to manage the 9,200-pound platform with fingertip precision. The electric windlass facilitates anchor deployment and retrieval without manual labor, essential equipment for extended cruising or overnight anchorages. The sonar suite includes a Garmin GSD 26 black box sounder with dual transducers (B175HW and R599LM), providing high-frequency and low-frequency sonar imaging for structure identification, bait detection, and bottom composition analysis. This redundancy ensures continuous sonar availability even if one transducer fails, a practical consideration for tournament fishermen and serious offshore operators.
Fishing Systems and Deck Layout
The 365 Offshore's cockpit layout prioritizes fish-handling efficiency and crew comfort in equal measure. Twin 45-gallon pressurized livewells flank the centerline, while two in-deck 88-gallon wells provide additional bait capacity—a total of 266 gallons of aerated, circulated bait storage. This configuration allows separation of multiple bait species: live mackerel in one well, goggle-eyes in another, with live bonito or herring in reserve. All wells feature maceration systems for waste management, critical aboard a fishing boat that may spend 12-plus hours offshore. Fish preservation capacity totals over 2,300 quarts across three insulated boxes: twin 815-quart boxes flank the transom, while a 688-quart coffin box occupies the forward cockpit section. The coffin box lid converts to a sun-lounging platform, merging fishing functionality with family comfort. All boxes are insulated, gasketed, and plumbed for overboard drainage, allowing efficient ice management and rapid fish processing. The factory-installed custom seachest system features four dedicated through-hull pumps, enabling independent circulation to each livewell and washdown system. A 20-gallon pressurized freshwater washdown system supports deck rinsing, fish cleaning, and crew comfort—essential infrastructure for extended offshore operations. The 36-volt Garmin trolling motor, powered by three LiFePO4 100-amp-hour batteries with integrated chargers, provides silent, efficient trolling propulsion for targeting live bait schools or working shallow structure without disturbing the main engines. Owner-installed Gemlux Bluewater outriggers extend the fishing platform's coverage, enabling spread fishing techniques across multiple lines while maintaining stability through the catamaran's inherent balance. The custom hardtop, fabricated by Shearline with integrated electric teaser reels, provides shade while supporting active trolling operations.
Advanced Electronics and Visibility Systems
The electronics integration reflects tournament-grade specifications. The Garmin 8616XSV 16-inch multifunction display serves as the primary navigation and sonar hub, while the GMR 1224 xHD2 radar ($5,800) delivers high-definition target separation and weather overlay capability—critical for navigating offshore in deteriorating conditions. The Garmin GXM 54 weather antenna receives satellite weather imagery, enabling real-time storm tracking and sea state assessment. The SIONYX Nightwave Ultra Low-Light marine camera represents a modern safety and operational upgrade, providing night-vision capability for navigation, docking, and fish-spotting in low-light conditions. This owner addition speaks to serious offshore operation where night transits and early-morning departures are routine. The Garmin 8616XSV, paired with dual ICOM M506 VHF systems and the GSD 26 black box sounder, creates a redundant electronics architecture—if one component fails, backup systems maintain navigation and communication capability. This redundancy is essential for offshore fishing, where a single electronics failure could compromise safety or turn a tournament into a recovery operation.
Comfort and Seating Configuration
Forward of the helm, a raised casting platform accommodates active anglers during trolling or sight-fishing, then converts to chaise seating with removable backrests for cruising and family outings. The 11-foot beam provides lateral stability and wide sightlines, while high freeboard—the distance from water to rail—keeps occupants secure in beam seas and allows standing room for casting or spotting. The aft mezzanine seats, mounted above the transom, create a secondary social space that faces the direction of travel, ideal for passengers who wish to observe the passing landscape without active fishing participation. Recessed handrails and padded combing bolster safety and comfort throughout the deck layout. The interior accommodations include a Laveo dry-flush toilet system, eliminating the complexity and odor of traditional marine heads while conserving freshwater from the 30-gallon water capacity. The dry-flush technology is particularly valuable aboard a fishing boat where deck activity and salt-water exposure create frequent head use. A battery charger and maintainer, wired throughout the vessel, supports the dual-battery architecture required for electric reel outlets, the trolling motor, and auxiliary systems.
Construction Details and Hardware
Tideline's construction methodology emphasizes durability and corrosion resistance. Hand-laid vinylester resin, chosen over polyester for superior moisture absorption resistance, combined with foam coring and aluminum-reinforced grid structure, creates a hull that resists delamination and osmotic blistering—common failure modes in older fiberglass boats. The integrated transom bracket system, rather than traditional bolted-on cleats, eliminates stress concentration points where outboards attach to the transom, distributing engine loads across the entire structural grid. Every hatch and access panel is finished on both sides and fitted with gasketed seals that drain overboard, preventing water accumulation in bilges and storage areas. Gemlux hardware—stainless steel fasteners and backing plates—is through-bolted rather than screwed, a construction detail that prevents corrosion and fastener failure in salt-water service. This level of detail reflects the brand's Carolina-custom boatbuilding heritage.
Trailerable Design and Mobility
The folding
Length
36.4 ft
Beam
11 ft'
Year
2020
Builder
Tideline
Model
365 Offshore

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