Design and Construction
The Javelin 38 was built predominantly of solid fiberglass with wood trim, carrying a spooned, raked stem and a raised counter with a plumb transom anchor. Beneath her lies a fixed fin keel of lead, with 4,760 pounds of ballast against a 16,000-pound displacement — a 30-percent ballast ratio that places real emphasis on righting moment rather than featherweight construction. The design's displacement-length ratio of 457 categorizes her among ultra-heavy cruisers, and at a length-to-beam ratio of 3.78 on a 10-foot beam she is narrow by modern standards but long-legged for her length, with a 25-foot waterline. Her capsize screening value of 1.59 and Motion Comfort Ratio of 39.6 speak to a hull meant to carry crew through weather rather than dance across a buoy course.
Rig and Handling
Tripp offered the Javelin 38 with more than one rig, and the as-documented choices include a masthead sloop and a yawl anchor. The standard sailplan is a Bermuda-rigged masthead sloop, a configuration that pairs a 577-square-foot sail area with the 16,000-pound displacement for a sail-area-displacement ratio of 15.95 — modest, and consistent with the heavy-cruiser character of the hull. Control lines were sized for manual handling: jib and genoa sheets run 37.8 feet at a half-inch diameter, the mainsheet stretches 94.6 feet, and a spinnaker sheet 83.2 feet, all 14 mm anchor. With a wetted surface of about 290 square feet and an immersion rate of 871 pounds per inch, she sits deep and moves her waterline reluctantly, but the theoretical displacement hull speed of 6.7 knots and a calculated maximum near 5.1 knots frame a boat built for passage-making, not sprinting. A draft of 5.25 to 5.55 feet dependent on load keeps her within most marina approaches.
Accommodations
The Javelin 38 is a cruiser and a recreational keelboat, but the sources do not itemize berth counts, galley arrangement, or head layout, and those details must be judged hull by hull at inspection. What the sources do establish is the service envelope: 35 gallons of gasoline in a single Universal Atomic 4 engine of 20 horsepower, 100 gallons of water, and a skeg-hung rudder supporting the fin-keel hull form. The wood trim gives her a period interior aesthetic rather than the all-fiberglass modular cabins of later production, but the specific joinery, stowage, and livability fall outside the recorded facts.
Known Issues
The Javelin 38 shows no structural defects, osmotic blistering, rigging failures, or systemic construction faults in the available record. Any individual hull's history — a documented osmosis repair, a chainplate re-bed, or a fuel-tank replacement — must be established through survey rather than assumed from the type's record.
Refits and Ownership
Ownership of a Javelin 38 means stewarding one of roughly two dozen surviving Dutch cruisers, many of which crossed to the United States under Seafarer Yachts' importation. The Atomic 4 gasoline engine is a period powerplant whose care diverges from modern diesel practice, and the solid-fiberglass hull with wood trim invites the usual half-century refit cycle: fastener renewal, rig inspection, and finish work on the trim. The yawl rig option means some boats will carry a mizzen and a different sail-handling profile than the masthead sloop majority, a point worth confirming before assuming spar and winch inventory.
The Verdict
The Javelin 38 is a serious small-series cruiser from the early Tripp-Lentsch collaboration: heavy, lead-ballasted, and narrow, with a documented stability profile and a choice of sloop or yawl rig. She is not a performance boat by modern numbers, but her construction record is clean and her proportions are those of a vessel built to go offshore rather than to win Wednesday night.
Pros
- Lead fin keel with 30-percent ballast ratio and a capsize screening value of 1.59
- Solid fiberglass hull with wood trim from a documented Dutch builder
- Offered in masthead sloop or yawl rig to suit owner preference
- Ultra-heavy-cruiser displacement-length ratio of 457 for offshore comfort
Cons
- Modest sail-area-displacement ratio of 15.95 limits light-air pace
- Gasoline Atomic 4 rather than diesel, with period-specific maintenance needs
- Only about 25 built, so spares and comparable boats are scarce






