New to Market: 2004 Bertram 570 “SONNY BOY”

Some boats just have a story—and SONNY BOY is one of them. This 2004 Bertram 570 Sportfish offered by Allied Marine for $549,000, has spent the last 21 years with one incredibly meticulous owner, who originally purchased her as the tournament-winning Bertram demo boat, Tangled in Blue. Today, she’s known as SONNY BOY, and she’s seriously dialed in for anyone looking for a rugged, proven offshore performer that won’t let you down.

Easy to see in Stuart, FL, this 57-footer is packed with all the hallmarks of Bertram’s legendary ride. She shares the same DNA as the 54 and 60 models—but with a key difference: her mid-ship fiberglass fuel tank perfectly balances the boat whether you’re full or near empty, giving her one of the most stable, consistent rides in the entire Bertram lineup.

Powered by a pair of CAT C30 engines, these motors have seen roughly 9,600 hours—but don’t let that number scare you off. The owner runs a CAT-heavy land grading business and maintained these engines like his livelihood depended on it. Oil samples with every change. Services done by the book. Upgraded turbos, injectors, new aftercooler cores, regular valve lash adjustments—you name it, it’s been done. This is a mechanically dialed-in, high-hour boat that’s been maintained like a low-hour creampuff.

The interior has seen just as much care—upgraded granite countertops, newer headliners, and updated TVs give it a modern, clean feel. She’s a 3-stateroom, 2-head layout with a full-beam master, VIP island queen, and side-by-side bunks in the guest cabin. Washer and dryer were swapped for extra storage (plumbing and power are still there if you want to reinstall), and everything inside feels fresh, functional, and well kept.

On the fishing side, SONNY BOY is loaded. You’ve got a Furuno 8 full-circle omni sonar, Eskimo ice chipper, in-deck fish boxes, transom livewell, bait prep, freezer, tackle storage—you name it. The cockpit is massive, around 170 square feet, complete with mezzanine seating, a Murray Products fighting chair, and even a transom door with gate for easy fish handling.

The flybridge is well laid out, with a centerline helm, twin helm chairs, and ample forward and side seating. She’s got a Garmin electronics suite, 25kW radar, AIS, autopilot, dual VHF radios, and even Miya Epoch Super US-9 electric reels—this boat is built to fish hard and travel far.

A 21.5 kW Phasor generator keeps everything powered up (8,100 hours and counting), and her systems are designed for serious bluewater cruising. Whether you’re chasing tournaments, cruising with the family, or just looking for a rock-solid, well-loved classic with all the right upgrades, SONNY BOY checks the boxes.

This is a value-packed 57 Bertram, powered by CATs, loaded with gear, and offered by a market-aware seller who knows what she’s worth. If you’ve been searching for a well-maintained, honest sportfish with pedigree and purpose—this might just be the one.

View the full listing here or contact Allied Marine Yacht Broker, Sean Fenniman at 772.260.1628 to schedule a private showing.