This boat is about making full Tampa Bay days feel simple—easy departures, confident runs, and space that works whether you’re cruising the sandbar or running offshore early.

Many owners step into this size because their current boat feels crowded, limited on range, or too focused on one activity. The Open 212 removes those tradeoffs by balancing fishability, seating, and modern helm control in a footprint that still fits local docks, lifts, and storage without friction.

With a 21’5” hull, 8’6” beam, and an 18° deadrise, this configuration is designed to stay predictable in afternoon chop while remaining efficient for day-long use around St. Pete, Clearwater, and Sarasota. The Garmin electronics suite, digital switching, and integrated Seakeeper Ride system reduce workload at the helm, letting the driver focus on traffic, conditions, and passengers instead of constant adjustments. Seating and storage are arranged so the boat transitions quickly from underway to anchored without reconfiguring the cockpit.

This boat is supported by Thunder Marine, with local rigging, delivery, and long-term service handled here in St. Petersburg—so ownership stays straightforward after the handoff.

Meet with Thunder Marine to walk through this exact configuration, understand how it fits Tampa Bay use, and review delivery and long-term support. Contact for Pricing.

Ownership with Thunder

You work with one local team from walkthrough to delivery.
 Service, warranty, and seasonal support stay close to home.
 Rigging and setup are handled for Gulf Coast conditions.
 You have a long-term partner after the sale, not just at closing.

Key Specs

• Length: 21’ 5”

• Beam: 8’ 6”

• Passenger Capacity: 10

• Fuel Capacity: 70 gal.

• Freshwater Capacity: 10 gal.

• Rear Livewell: 25 gal.

• Draft (up): 16"

• Deadrise at Transom: 18°

• Approx. Dry Weight: 3,618 lbs.

• Approx. Bridge Clearance w/ Top: 9’ 4”

• Max Horsepower: 250 HP

• Number of Engines: 1

• Engine Make & Model: Mercury 250 V8

Features

Helm & Electronics

• Garmin 12" MFD with BlueChart G3 mapping for clear, local navigation

• Garmin VHF radio with antenna for dependable communication

• Garmin Apollo premium stereo with JL Audio speakers for controlled sound underway

• SeaStar digital switching with keypad to reduce helm complexity

• Seakeeper Ride VACS to improve running attitude and comfort

• Dual wireless phone chargers and USB/USB-C power to keep devices secured and powered

Seating & Comfort

• Premium dual-chair leaning post with flip-up bolsters and armrests for seated or standing runs

• Bow cushions, bolsters, and removable backrests to switch between seating and open space

• Bow filler board with cushion for lounging at anchor

• Rear fold-down seating that clears the cockpit when not needed

Livewells, Storage & Utility

• 25-gallon aquarium livewell with high-speed pickup for bait management

• Raw and freshwater washdowns to simplify cleanup

• Under-gunwale rod storage and flush-mount rod holders for organized decks

• Dedicated anchor storage at bow and stern

• Built-in console cooler and additional insulated storage

Hull & Deck

• Advanced fiberglass stringer system with no wood for long-term durability

• Self-bailing cockpit and grip-text non-skid for confident movement onboard

• Fiberglass hard-top with integrated lighting and matching underside color

• Built-in swim platform with 4-step ladder for easy water access

• Underwater lights to extend evening use