Design and Construction
The 420 is built around a powder-coated aluminum frame to which two inflatable floats are attached by welded-on flags slipped into pockets on the tubes. The floats themselves are single-chamber, 4.2 m long and 45 cm in diameter, made of reinforced Heytex 5509 PVC — a material and production method borrowed from white-water rafts, giving high abrasion resistance and hard-wearing durability. The trampoline between the hulls is a woven plastic fabric measuring 190 x 135 cm, stretched across the frame. Keel fins beneath each float are low-aspect, UV-stabilized polypropylene; their shape gives good performance yet lets the boat sail in very shallow water without damage risk anchor. The whole craft carries a design category D rating and a load capacity of 450 kg for four persons.
Rig and Sailing Performance
The mast is a three-section alloy tube, 5.05 m assembled, with a groove for sail attachment and a black powder-coated finish. Total sail area is 9.7 m² split between a 6.5 m² main and 3.2 m² jib, both built from Dimension Polyant cloth at 175–240 g/m with transparent windows for visibility. The Instinct base trim is boomless with battens only and no forestay or jib halyard, while the Emotion and premium models gain a boom with outhaul and vang for better sail-shape control anchor. On those same Emotion and premium versions upwind performance is the best anchor. A single centerline rudder attaches to the frame and features an automatic cleat that releases the rudder rope if the boat grounds, plus a 90-degree raise position locked in either state; the tiller arm joints for full 360-degree movement. An optional Code-Zero-style gennaker of 10.5 m² adds light-air reach, and most models accept the optional gennaker, trapeze, and motor mount.
Accommodations and Trim Levels
There are no cabins — the 420 is a day-sailing inflatable with a central trampoline lounge and optional front trampoline on some editions. Trim spans the family-friendly Instinct with exceptional stability and simplicity, the Emotion with transparent monofilm main and aluminum boom, and the Evoque with carbon fiber rudder blade, bowsprit, and boom plus a dark X-PLY main. The Laura Dekker Special Edition is based on the Evoque with her designed sails and trampoline, carbon laminate sails, a traveler, and a certificate of authenticity. The 20th Anniversary Edition, limited to 20 numbered boats, adds wheeled bags, front trampoline, Dyneema shrouds, windvane, and traveler as standard.
Assembly and Transport
Assembly runs about 30 to 45 minutes depending on source, and dismantling reverses into two bags of 175 x 30 x 30 cm weighing just over 25 kg each. The boat stows aboard or in a car, and the rigid-bottom alternative bags add a thin reinforced base. Fittings throughout are from Ronstan, Seasure, Clamcleat, and Suchomel.
The Verdict
The Minicat 420 is a genuine inflatable cat that trades cabin comfort for utter portability and shallow-water freedom. Its raft-derived tubes and alloy frame make it tough yet light, and the trim ladder from Instinct to Evoque gives a buyer real performance choices.
Pros
- Packs into two carryable bags; stows in a car or under a bed
- Shallow-water keel fins and grounding-safe rudder release
- Trim range from simple boomless family model to carbon Evoque
Cons
- Design category D — limited to sheltered waters
- Single-chamber floats — no redundant buoyancy if punctured
- No cabin or overnight accommodation
