I know some of this is in the manual, mine is on the boat right now.

A friend and I were having a conversation, and he asked me what the DL ratio was on the Ariel, I told him I had no idea.

Here is what he came up with,

SPECIFICATIONS RATIOS RIG DIMENTIONS
LOA 25.58 SA/D 15.3 I 31.5
LWL 18.66 D/L 402 J 9.5
BEAM 8 BR 44% P 27
DRAFT 3.58 L/B 3.2 E 11.5
DISP 5700 LWL/BWL 2.67
BALLAST 2500 CSF 1.79

SCREENING STABILITY VALUE 18.25
SAIL AREA 305
MCR 26.6
ANGLE OF VANISHING STABILITY 158.47
HULL SPEED 5.76
PHRF 261


LEGEND
SA/D=SAIL AREA TO DISPLACEMENT RATIO
D/L=DISPLACEMENT TO LENGTH RATIO
BR=BALLAST RATIO
L/B=LOA TO BEAM RATIO
LWL/BWL=LWL TO BEAM WATERLINE LENGTH RATIO
MCR=MOTION COMFORT RATIO


D/L LEGEND:
40-50 LIGHT RACING MULTIHULL
60-100 ULTRA LIGHT OCEAN RACER
100-150 VERY LIGHT OCEAN RACER
150-200 LIGHT CRUISER/RACER
200-250 LIGHT CRUISING AUXILIARY
260-300 AVERAGE CRUISING AUXILIARY 300-350 HEAVY CRUISING AUXILIARY
350-400 VERY HEAVY CRUISING AUXILIARY

LINKS used:
http://www.tedbrewer.com/yachtdesign.html
http://www.sailingusa.info/cal__avs.htm
http://pearsoninfo.net/info/pearsons-tabloid.pdf