The question doesn't bother me seeing it asked in the fourms but I thought I would have this up for others so they would not have to ask the question about how to scale 1/144. Here goes it. Know how long your ship is in real life. If your not sure you can look up the Wika page for the class of ship, it should show in feet, Take the German battleship Bismarck for example Length: 793 ft, Beam: 118 ft, and Draft: 31 ft divide the feet numbers by 12 Lets use the Length for example 793/12= 66.0833333 the hole number "66 is your inches" while the decimal needs to be converted to a fraction it will be in decimal form so use the chart below for your fraction conversion I would go with the 1/8th because 7/64 or a 3/32nd is so small its almost unnoticeable so in math terms usually round up its up to you. I have a decimal to fraction conversion chart below for 1/144 scale. Bismarck: Length 793ft /12= 66.08333 = 66 in. 1/8th. Beam: 118ft /12= 9.83333 = 9 in. 7/8th. Draft: 31ft /12= 2.58333 = 12 in. 1/4th. Standard System Measurement Fractions Fraction ... Decimal ... | ........ .Fraction ... Decimal 1/64 ........ .015625 .... .| ........ .33/64 ........ .515625 1/32 ........ .03125 ...... .| ........ .17/32 ........ .53125 3/64 ....... .046875 .... .| ........ .35/64 ........ .546875 1/16 ........ .0625 ........ .| ........ .9/16 ........... .5625 5/64 ....... .078125 ..... .| ........ .37/64 ........ .578125 3/32 ....... .09375 ....... .| ........ .19/32 ........ .59375 7/64 ....... .109375 ..... .| ........ .39/64 ........ .609375 1/8 ......... .125 ............ .| ........ .5/8 ............ .625 9/64....... .140625 ...... .| ........ .41/64 ........ .640625 5/32....... .15625 ........ .| ........ .21/32 ........ .65625 11/64...... .171875 ...... .| ........ .43/64 ........ .671875 3/16....... .187 ............ .| ........ .11/16 .......... .6875 13/64..... .203125 ...... .| ........ .45/64 ........ .703125 7/32....... .21875 ........ .| ........ .23/32 ........ .71875 15/64..... .234375 ...... .| ........ .47/64 ........ .734375 1/4......... .25 .............. .| ........ .3/4 ............ .75 17/64..... .265625 ...... .| ........ .49/64 ........ .765625 9/32....... .28125 ........ .| ........ .25/32 ........ .78125 19/64..... .296875 ...... .| ........ .51/64 ........ .796875 5/16....... .3125 ........... .| ........ .13/16 ........ .8125 21/64..... .328125 ...... .| ........ .53/64 ........ .828125 11/32...... .34375 ........ .| ........ .27/32 ........ .84375 23/64..... .359375 ...... .| ........ .55/64 ........ .859375 3/8......... .375 ............ .| ........ .7/8 ............ .875 25/64..... .390625 ..... .| ........ .57/64 ........ .890625 13/32...... .40625 ...... .| ........ .29/32 ........ .90625 27/64...... .421875 ..... .| ........ .59/64 ........ .921875 7/16 ....... .4375 ......... .| ........ .15/16 ......... .9375 29/64 .... .453125 ...... .| ........ .61/64 ........ .953125 15/32 ..... .46875 ....... .| ........ .31/32 ........ .96875 31/64 ..... .484375 ..... .| ........ .63/64 ....... .984375 1/2 ......... .50 ............. .| ........ .1 ................ .1.00 please let me know if you notice Errors in my chart could not post a Pic of the chart so I typed it out. web site would not let me let me? hope this was helpfull.
You should be wary of the rounding up thing, especially when considering beam. For instance, IRCWCC rules stipulate "The allowable error in the beam of a model ship shall be +/- 1/8? or 2% of the listed scale dimension, whichever is greater. " For your beam example, 9 7/8inches would be a better number to round to than 10. Not sure what you have going on here with your draft math.
Mathmatics teachers say round up. that was my thought process aney how when I wrote this and besides aneything shorter then 1/8th of a inch is a mynute ammount of mesherment so I would round to the 1/8th sorey afterr I posted this I went on a unexpected class trip for a few weeks TXANG.
