Built on the hull Johnson drew for the earlier 440 and 460, the 439 combines a heavy-displacement, full-keel platform with a modern solent rig and a deck designed to minimize maintenance. Cruising World’s Boat of the Year judges named it Best Full-Size Cruiser for 2021. The award suits a boat aimed at couples who value sea-keeping, passage comfort, and stowage more than speed to windward.
Design and Construction
The 439 has a hand-laid, solid-fiberglass hull with 12,000 pounds of lead ballast encapsulated in the patented Full Foil Keel and then sealed with concrete and resin. This construction eliminates external keel bolts and gives the long-keel profile a built-in grounding shoe. Steering is through a single wheel and a skeg-hung rudder.
The hull measures 38 feet 1 inch on the waterline, with a beam of 14 feet 4 inches. At 32,000 pounds displacement, the 439 has a displacement-to-length ratio of 259—the highest among the boats tested by one reviewer’s panel.
Island Packet eliminated all exterior wood to reduce annual maintenance. Inside, the yard replaced marine plywood with Coosa Board, a composite material described as indestructible.
Rig, Sailing, and Engine Performance
The solent rig combines a self-tacking jib on an inner forestay with a 170 percent genoa on a second stay immediately forward. Island Packet will build the boat with or without a Hoyt jib boom for that self-tacker. A Seldén Synchronized Main Furling system manages the 1,131 square feet of sail area.
In 5 to 8 knots of breeze on Tampa Bay, the speedometer remained in the mid-6- to low-7-knot range. Recorded trials showed 3.7 knots closehauled and 7.2 knots reaching.
An 80 hp Yanmar diesel with shaft drive pushed the boat at 6.2 knots at cruising speed and 7.6 knots fast. The long-keel hull form, however, isn’t designed for quick reversals.
Accommodations and Systems
Below, the 439 offers three cabins and 6 to 9 berths, with 6 feet 5 inches of headroom. The owners’ cabin is forward to starboard, with a diagonally oriented queen berth and his-and-hers hanging lockers. To port, the head has a glass shower door etched with waves.
In the saloon, captain’s chairs to port flank a drop-down table. An L-shaped settee to starboard doubles as a sea berth. A bulkhead-mounted dining table folds down and opens to reveal an adjustable cabinet.
The galley has Corian counters with deep fiddles. Aft to port, the guest cabin provides a double berth, a hanging locker, and access to the guest head. Instead of a starboard aft cabin, the 439 has a utility room aft of the galley. On the boat sailed, this space held a vented washer and dryer, an extra freezer, stowage, a 6 kW Northern Lights generator, and filters for the genset and engine.
Tankage comprises 160 gal of fuel, 220 gal of water, and a 55 gal holding tank. At the stern, a sugar-scoop replaces the drop-down transom.
Known Issues
On Hull No. 1, a plastic cover over the electric jib-furler control switches made the controls difficult to reach when furling the genoa to tack. The jib telltales on the same hull were also a little difficult to read under sail.
These were first-boat nits rather than structural faults. Neither indicated a defect in the hull or rig itself.
The Verdict
The 439 is a thoughtful evolution of the Island Packet formula. It retains the brand’s encapsulated-ballast security and the calm of solid-fiberglass construction while updating the rig and eliminating exterior teak.
For a cruising couple, it’s a turnkey, low-upkeep passage boat with serious tankage and a flexible utility room. The trade-offs are the handling characteristics of a long keel and a heavy hull that won’t win light-air races.
Pros
- Encapsulated lead ballast in a Full Foil Keel eliminates keel-bolt leak paths
- Coosa Board interior construction and the absence of exterior wood reduce maintenance
- Solent rig with a self-tacking jib simplifies short-handed sail handling
- 160 gal of fuel, 220 gal of water, and a 55 gal holding tank support long, independent cruising
Cons
- Long-keel hull form is sluggish in reverse and tight quarters
- The highest displacement-to-length ratio in its test group limits light-air pace
- Early hulls placed furler switches under a cover that hindered tacking
