Keel Sharpies  Straight stem, straight stern, slab sides, flat hulls - and ballasted keels

MICRO
The queen of the Bolger keel sharpies and  the world's only real pocket cruiser: 15'4" x6', draft 1'9", sail 153 sq ft

SquareBoats  brings you Roger Keyes' adventuring Micro, Paloma Blanca

Other Micros rampage at the ends of these external links plundered from the Bolger Boats on the Web listing:

The original photo on the web
The DEFINITIVE Micro page from Chuck Merrell. "Trivial Pursuit" in great photos and construction photos, with a link to an extreme goldplater Micro! This is a MUST SEE page.  Technical details, links and an archive of the original Micro newsletters.
Yet more Micro... Construction, internals. Note, large photos in this link.
...and even more on Micro construction... Look, read, learn as John Morrice progresses through construction in the chilly British Isles.
...and another progressive construction... A good building page from Rob Feeney.
...and one with a bowsprit, no less.. Demountable bowsprit and jib added, a sort of racing (?) version to terrify other boats and her crew alike.
...and Stan Muller's Snow Goose building shots...
...and Peter Lenihan's Micro...
...and is it a YAM? (yet another Micro?)  Well, yes, but this boat, like Paloma Blanca, has really done things.

At the risk of being excommunicated by the Master, SquareBoats has Dave Zeiger and Anke Wagner's Zoon, a modified Long Micro with leeboards rather than keel.  Conventional Long Micros haul their keels on these external links:

Long Micro Totally reworked website choc-a-bloc with information, FAQs, photos on this great pocket cruiser. Square boats really rule OK! This is the best info available on the Long Micro.

Sail up Sydney Harbour without a rudder - Heinrich Rose's maiden voyage