Zim Megabyte Sailboat Review, Specs, and Listings

Bruce Farr·2005
Approximate drawing

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Hull Type
Monohull · daggerboard
Rig
Cat Rig
LOA
14.25' · 4.34 m
Disp.
130 lbs · 59 kg
First year
2005

The Zim Megabyte is a big singlehanded dinghy with a length overall of 14 feet, 3 inches and a beam of 5 feet, 2 inches, designed by Bruce Farr and built as a catrigged monohull carrying a daggerboard anchor. Its 100 square feet of Mylar sail area and a sailareatodisplacement ratio of 62.35 place it firmly among responsive, easily driven planing dinghies, while the 4.09 capsize ratio signals a craft built for stability rather than offshore survival. Production began in 2005, and Zim Sailing has since discontinued the model, grouping it with the Byte, Zim 15, and Hartley as legacy classes no longer supported anchor.

Measurements

Dimensions 01

Length Overall
14.25 ft
Length on deck
Waterline Length
Beam
5.18 ft
Draft
3.5 ft
Maximum Headroom
Air Draft

Construction & hull 02

Construction
Fiberglass
Hull Type
Monohull
Keel Type
Daggerboard
Rudder
1× —
Ballast
Displacement
130 lbs
Water Capacity
Fuel Capacity

Rig & sails 03

Rigging Type
Cat Rig
Mainsail luff
Mainsail foot
Foretriangle height
Foretriangle base
Forestay Length (estimated)
Sail Area
100 sqft

Calculations 04

Sail Area to Displacement Ratio
62.35
Ballast to Displacement Ratio
Displacement to Length Ratio
Comfort Ratio
Capsize Screening Ratio
4.09
Hull Speed

Design and Construction

The Megabyte’s hull is solid fiberglass with a solid fiberglass deck, and the side decks are broad and chamfered on the edges, identical to those on the Tasar dinghy, as is the entire deck anchor. The cockpit well is unusual: the sides of the cockpit bond directly to the bottom of the boat, so there is no cockpit sole as such, and the resulting real cockpit averages 15 inches deep, noticeably larger than a Laser’s. Both the daggerboard and the dagger rudder are built from aluminum extrusions, keeping the appendages light and rigid. The displacement is listed as identical to a Laser’s hull weight, yet the bigger hull permits carrying friends aboard, making the boat suited to family daysailing.

Rig and Handling

A carbon fiber mast carries the Mylar sail, which holds 20 more square feet than a Laser’s, and a unique bungy cord set into the luff gives the sailor positive sail-draft control anchor. A traveler is fitted, and an additional set of hiking straps is placed forward for a crew member. The cat rig keeps deck handling simple for singlehanded sailing while the extra sail area rewards weight placement and breeze.

Accommodations

There are no cabins or berths in the conventional sense; the Megabyte is an open dinghy whose size makes it suitable for family daysailing anchor. The real cockpit, deeper than a Laser’s, and the forward hiking straps let an adult and a child or two share the boat for short coastal outings.

Refits and Ownership

Performance Sailcraft, which finished the boats at its plant, launched its 150th Megabyte and signed on an additional hull and deck builder to meet demand anchor. With Zim Sailing no longer producing the class, owners rely on the legacy network and existing tooling for parts, and the Tasar-derived deck simplifies some composite repair logic for those familiar with that class.

The Verdict

The Zim Megabyte is a thoughtfully scaled singlehanded dinghy that borrows a proven deck from the Tasar, adds a powerful Mylar rig on carbon, and keeps the hull weight of a Laser while giving more room and sail. It is a daysailing and teaching platform rather than a racer’s offshore weapon, and its discontinued status places a premium on finding a clean example with sound aluminum appendages.

Pros

  • Big, stable 14'3" singlehander with 5'2" beam and 100 sq ft Mylar rig
  • Tasar-identical deck and broad side decks ease handling and repair
  • Aluminum daggerboard and rudder, carbon mast, luff bungy for draft control
  • Deep 15" cockpit and forward crew straps suit family daysailing

Cons

  • No longer produced by Zim Sailing; legacy class with limited factory support
  • Open dinghy with no enclosed accommodation

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