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Space 1889: shipbuilding calculations seem off
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<blockquote data-quote="aramis erak" data-source="post: 7947211" data-attributes="member: 6779310"><p>You have a math error. Working from your (minimalist) notes</p><table style='width: 100%'><tr><td>Item</td><td><p style="text-align: right">Rating</p> </td><td><p style="text-align: right">Tons</p> </td><td><p style="text-align: right">Price</p> </td><td>Notes</td></tr><tr><td>Hull Size </td><td><p style="text-align: right">Hs = 3</p> </td><td><p style="text-align: right">0</p> </td><td><p style="text-align: right">£15,000</p> </td><td>allows flight with up to 480 tons. Well, technically 500... see below</td></tr><tr><td>Turn Cranks</td><td><p style="text-align: right">Tc = 16</p> </td><td><p style="text-align: right">160</p> </td><td><p style="text-align: right">£1,600</p> </td><td>Not a multiple of Hs, so a suboptimal choice. optimal would be 12 or 18</td></tr><tr><td>Armor</td><td><p style="text-align: right">0</p> </td><td><p style="text-align: right">0</p> </td><td><p style="text-align: right">0</p> </td><td>Bad idea, but it's your design</td></tr><tr><td>Heavy Gun</td><td><p style="text-align: right">2</p> </td><td><p style="text-align: right">80</p> </td><td><p style="text-align: right">£2000</p> </td><td></td></tr><tr><td>Rogue Gun</td><td><p style="text-align: right">1</p> </td><td><p style="text-align: right">60</p> </td><td><p style="text-align: right">£2000</p> </td><td></td></tr><tr><td>————————</td><td>—————</td><td>—————</td><td>—————</td><td>—————————————————</td></tr><tr><td>Totals</td><td></td><td><p style="text-align: right">300</p> </td><td><p style="text-align: right">£20,600</p> </td><td></td></tr></table><p>Now, working through the ratings...</p><p>LV = 100×Hs / tonnage</p><p>LV = 100×3 / 300 </p><p>LV = 300/300</p><p>LV = 1 </p><p>So High.</p><p>Now, it you stripped the rogue... you'd have 300/240≅ 1.25, cross the 1.2 barrier, and hit very high.</p><p>Spd= Turncranks / Hs</p><p>Spd = 16/3</p><p>Spd = 5.33</p><p>Applying the reduction for over 4...</p><p>Spd = 4 + (5.33-4)/2</p><p>Spd = 4 + (1.33)/2</p><p>Spd = 4 + 0.66</p><p>Spd = 4.66</p><p>Applying rounding, speed = 4. (some GM's keep the fraction for chases, but the rules don't)</p><p>Hull Hits 3 per altitude, thus 12 hits - first three for high, next three for medium, next three for low, last three for very low.</p><p>Crew</p><p>Gunners: 7 (2 per heavy, 1 per rogue)</p><p>Turncranks: 16. (1 per crank)</p><p>Bridge: 4 (captain, helmsman, trimsman, signalman)</p><p>Dechands 3 (1 per hull size)</p><p></p><p>On hull size... Hull size is how much liftwood is there, as much as overall size.</p><p>You don't (and should not) used the full.</p><p>If tonnage is 125 to 166 per hull size, max is low.</p><p>100-125 is medium</p><p>83 to 100 is high</p><p>Under 83 is very high.</p><p></p><p>So, optimizing your design a bit...</p><p>we use 12 turncranks instead of 16... saves 40 tons. 300/260=1.15... not very high. We need to shave down to 300/1.2=250 tons... but we also lose 4 crew and save £400, but still not very high.</p><p></p><p>Or, you can drop another thousand on liftwood, and be HS 4... so 16 cranks produces speed 4, the total 300 tons is out of 400 capacity, adds one sailor, and has LV=1.333, and so is very high rated.</p></blockquote><p></p>
[QUOTE="aramis erak, post: 7947211, member: 6779310"] You have a math error. Working from your (minimalist) notes [TABLE] [TR] [TD]Item[/TD] [TD][RIGHT]Rating[/RIGHT][/TD] [TD][RIGHT]Tons[/RIGHT][/TD] [TD][RIGHT]Price[/RIGHT][/TD] [TD]Notes[/TD] [/TR] [TR] [TD]Hull Size [/TD] [TD][RIGHT]Hs = 3[/RIGHT][/TD] [TD][RIGHT]0[/RIGHT][/TD] [TD][RIGHT]£15,000[/RIGHT][/TD] [TD]allows flight with up to 480 tons. Well, technically 500... see below[/TD] [/TR] [TR] [TD]Turn Cranks[/TD] [TD][RIGHT]Tc = 16[/RIGHT][/TD] [TD][RIGHT]160[/RIGHT][/TD] [TD][RIGHT]£1,600[/RIGHT][/TD] [TD]Not a multiple of Hs, so a suboptimal choice. optimal would be 12 or 18[/TD] [/TR] [TR] [TD]Armor[/TD] [TD][RIGHT]0[/RIGHT][/TD] [TD][RIGHT]0[/RIGHT][/TD] [TD][RIGHT]0[/RIGHT][/TD] [TD]Bad idea, but it's your design[/TD] [/TR] [TR] [TD]Heavy Gun[/TD] [TD][RIGHT]2[/RIGHT][/TD] [TD][RIGHT]80[/RIGHT][/TD] [TD][RIGHT]£2000[/RIGHT][/TD] [TD][/TD] [/TR] [TR] [TD]Rogue Gun[/TD] [TD][RIGHT]1[/RIGHT][/TD] [TD][RIGHT]60[/RIGHT][/TD] [TD][RIGHT]£2000[/RIGHT][/TD] [TD][/TD] [/TR] [TR] [TD]————————[/TD] [TD]—————[/TD] [TD]—————[/TD] [TD]—————[/TD] [TD]—————————————————[/TD] [/TR] [TR] [TD]Totals[/TD] [TD][/TD] [TD][RIGHT]300[/RIGHT][/TD] [TD][RIGHT]£20,600[/RIGHT][/TD] [TD][/TD] [/TR] [/TABLE] Now, working through the ratings... LV = 100×Hs / tonnage LV = 100×3 / 300 LV = 300/300 LV = 1 So High. Now, it you stripped the rogue... you'd have 300/240≅ 1.25, cross the 1.2 barrier, and hit very high. Spd= Turncranks / Hs Spd = 16/3 Spd = 5.33 Applying the reduction for over 4... Spd = 4 + (5.33-4)/2 Spd = 4 + (1.33)/2 Spd = 4 + 0.66 Spd = 4.66 Applying rounding, speed = 4. (some GM's keep the fraction for chases, but the rules don't) Hull Hits 3 per altitude, thus 12 hits - first three for high, next three for medium, next three for low, last three for very low. Crew Gunners: 7 (2 per heavy, 1 per rogue) Turncranks: 16. (1 per crank) Bridge: 4 (captain, helmsman, trimsman, signalman) Dechands 3 (1 per hull size) On hull size... Hull size is how much liftwood is there, as much as overall size. You don't (and should not) used the full. If tonnage is 125 to 166 per hull size, max is low. 100-125 is medium 83 to 100 is high Under 83 is very high. So, optimizing your design a bit... we use 12 turncranks instead of 16... saves 40 tons. 300/260=1.15... not very high. We need to shave down to 300/1.2=250 tons... but we also lose 4 crew and save £400, but still not very high. Or, you can drop another thousand on liftwood, and be HS 4... so 16 cranks produces speed 4, the total 300 tons is out of 400 capacity, adds one sailor, and has LV=1.333, and so is very high rated. [/QUOTE]
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