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BATTLEFLEET 1900
PRE-DREADNOUGHT NAVAL WARFARE: 1890-1905



Scales Page

The tables below give an outline of the ranges that apply to each of the four major scale formats. Players should note that while each game scale has a recommended model scale associated with it, that is only a recommendation. In reality any scale of model may be used with the various formats so long as players are able to get a satisfactory effect for game play. The first table is a list of scales and ranges, some of which are required knowledge for game play, and others of which are for reference for setup or general information. Note that within the rules text, ranges are offered referred to in "cables." A cable is one-tenth of a nautical mile, and within the rules text it is commonly used to define or control short range distances. The tabletop range for "one cable" can be marked on the combat chart, immediately beneath the Torpedo table.

The second set of tables below are for calculating the scale game speed available to a ship. Included are multipliers for calculating the basic game speed of a ship based on its original maximum speed in knots. There are also six Increment multipliers for calculating the six levels of a vessel's propulsion box speeds for use in the ship logs. The multipliers for establishing the Basic or maximum available speed of a vessel based on the real life original speed are immediately below the Speed and Movement header. Below that is a short list of of sample speeds and their related lists of speed categories. At the bottom is a short fraction rounding guide to let players know how best to round fractions for the inch based scales. Note that destroyers and other very light craft use only three speed increments instead of the usual six increments used for all larger vessels.

Small Scale
(millimeters)
Medium-Small Scale
(millimeters)
Medium-Large Scale
(inches)
Large Scale (inches)
 
Scales and Ranges
Recommended Model Scale 1/6000 1/3000 1/2400 1/1500
Scale Length of 400' long ship 9.8mm 14.6mm 0.7" 1"
1 Nautical Mile (1.85km) 148 220 11 15.5
1 Cable 15 22 1.1 1.5
1 Kilometer 80 120 6 8.5
1 "Click" 6 10 0.5 .66
Each Gun Bracket (2500m) 200 300 15 20
Total (maximum) Gun Range 800 1200 60 80
#2, #5 & #8 Turning Radiuses none, 40, 64 24, 60, 96 1.2, 3.0, 4.8 1.7, 4.2, 6.7


Small Scale
(millimeters)
Medium-Small Scale
(millimeters)
Medium-Large Scale
(inches)
Large Scale (inches)
 
Speed and Movement
Basic = Original speed x 6 Basic = Original speed x 9 Basic = Original speed x .45 Basic = Original speed x .65
  Increment multipliers: From base value = .830, .666, .500, .333, .166¹    Descending from previous value = .830, .802, .750, .666, .498²
Example Speeds:
25 knots 150 - 125 - 100 - 75 - 50 - 25 225 - 187 - 150 - 112 - 75 - 37 11.3 - 9.4 - 7.5 - 5.6 - 3.6 - 1.9
22 knots 132 - 110 - 88 - 66 - 44 - 22 198 - 164 - 132 - 99 - 66 - 33 9.9 - 8.2 - 6.6 - 4.9 - 3.3 - 1.6 14.3 - 11.9 - 9.5 - 7.1 - 4.8 - 2.4
19 knots 171 - 142 - 114 - 85 - 57 - 28

18 knots 108 - 90 - 72 - 54 - 36 - 18 162 - 134 - 108 - 81 - 54 - 27 8.1 - 6.7 - 5.4 - 4.0 - 2.7 - 1.3 11.7 - 9.7 - 7.8 - 5.8 - 3.9 - 1.9
16½ knots   149 - 124 - 99 - 74 - 50 - 25 7.4 - 6.1 - 4.9 - 3.7 - 2.5 - 1.2  
16 knots 144 - 120 - 96 - 72 - 48 - 24 9.75 - 8.1 - 6.5 - 4.9 - 3.24 - 1.6
15 knots 90 - 75 - 60 - 45 - 30 - 15 135 - 112 - 90 - 67 - 45 - 22 6.8 - 5.6 - 4.5 - 3.4 - 2.3 - 1.1
13 knots   117 - 97 - 78 - 58 - 39 - 19  
10 knots 60 - 50 - 40 - 30 - 20 - 10 90 - 75 - 60 - 45 - 30 - 15 4.5 - 3.7 - 3.0 - 2.2 - 1.5 - 0.7
5 knots 30 - 25 -20 - 15 - 10 - 5 45 - 37 - 30 - 22 - 15 - 7 2.3 - 1.9 - 1.5 - 1.1 - 0.8 - 0.4
         
Fraction Rounding =
( ¼ ) ( ½ ) ( ¾ )
(0.13 - 0.37) ( 0.38 - 0.62) (0.63 - 0.87)
¹ Multiply each value by the original maximum "basic" speed value to establish the other five speed increments for the ship log.
² Multiply each value by the previous equation result - in "descending" order. Note that both of these methods will result in the same six speed increments. The second method is faster but requires more attention.
 
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