First called DYNAMIC 3000.
Offered with Standard and ‘Lake’ rig.
(Rig dimensions for standard listed here.)

Sail Area (Standard):
Main: 29.90m2/322 sq.ft.
Genoa 29.65m2/319 sq.ft.
Jib (self tacking) 16.29m2/175.3 sq.ft.
Spinnaker 85.0m2/915 sq.ft.

In 2000? a new version was offered called simply DIAMANT, with modernized keel, rudder and rig.

Shallow draft version: 2.45m.
Roller furling mainsail opt.: E=7.18m
Asymmetrical Spinnaker 256 ㎡ : /2756 sq ft
Optional telescopic keel: 2.10m – 2.55m / 6.92′ – 8.33′

Keel/centerboard version also available.
Draft: BU: .65m/2.13′ BD: 1.4m/4.59′

Inboard available as an option.
Category class C

The GOVERNOR’S CUP 21 (or GC-21) was commissioned by and the first 11 were built for the Newport Balboa Sailing and Seamanship Association (NBSSA) as a match racer for the Governor’s Cup Match Racing Series, first held in California in 1967.

Also available with twin keels.
Draft for twin keel version: 3.42’/1.04m.
Probably from the tooling for the earlier MG SPRING 25.

Shoal draft: 4.5′.
Carbon spar opt.
Removable Hoyt (self tacking) jib boom opt.

Shallow draft version: 6.07’/1.85m
Rig dims. from IMS cert.