The YANKEE 30-MORC was a variant that was offered when the YANKEE 30 MKI version was first introduced. The shorter length is an accommodation to maximum LOA of 30′ prescribed by the rule. The YANKEE 30 is similar to (S&S design No. 1999-C1) the S&S 30 built by Swarbrick Brothers of Australia.

Based on the TROTTER PANDORA, which, in turn is a cruising version of the RANDMEER.
Twin keel, triple keel, and keel/cb versions.

Althought the hulls are mostly the same, the International has a deeper, higher aspect ratio fin keel than the PANDORA MKI, a taller mast and shorter boom following the IOR fashion of the time.
Draft:
Twin keel – 3’/.92m
Keel/CB BU – 2’/.65m BD – 4.5’/1.37m

Based on the the earlier PANDORA INTERNATIONAL.
Available with fin keel, twin/bilge keel, and keel/centerboard.

There is also A drop keel version that has a transom mounted, retractable rudder.
Draft: Keel Up 2.0′; Keel Down 4.5′.

A keel/cb verion of the the O’DAY 28 was also available. Draft BU: 3.25′, BD: 6.83′; ballast: 2,725 lbs / 1,236 kg
Later, the the keel/cb version was dropped in favor of a shoal draft fixed keel: Draft:3.67′
Deeper keel: Draft:4.67’/ 1.42m
Alternate tall rig:
I: 38.00′ / 11.58m
J: 12.08′ / 3.68m
P: 32.50′ / 9.91m
E: 10.00′ / 3.05m
Also available with a gasoline OMC Saildrive 2 cylinder motor.

Trident Marine produced three variations of the same hull, the WARRIOR (centre cockpit), CHALLENGER (aft cockpit) and VOYAGER (pilothouse) versions.

The HURLEY 22 was Hurley Marine’s most popular model. After Hurley Marine went out of business, the boat was built by South Coast Marine and then Ravensail.
Ravensail called their version the HURLEY 22R.
Later still, a few were built by Hurlwind (1988-1990). It is also said some were built (under license)in Holland. (HURLEY 700) .
HURLEY 22’s differ from one another in many details including mast lengths, ballast material, internal finish and etc..
Fin or bilge keels. Bilge keel version draws 2.5′.
Earlier, non-bilge keel models, had a different shaped rudder on skeg.
Ballast and disp. numbers that seem to be shared across most of the manufacturers literature seem to be unrealistic though they are quoted here.
(Designer has stated bal/disp ratio was to be 40%.)

Specs are from the builder’s brochure. Some owners have measured…
Draft – 1.3m / 4.26ft
Disp – 3600kg / 7937lbs

A taller rig was available. Height over waterline: 12.45m / 40.85ft.