This is a weekly posting with GURPS vehicles (and the like) to the
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redistribution of my work, but I would like to know if you put it on
a website or the like. The files at omeyer.gmxhome.de are down until
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Onno Meyer, 2015-04-20
Steam Line of Battle Ship v1.0 (TL5)
Copyright 2015 by Onno Meyer
Even a small steam engine improves the tactical and strategic mobility
of a line of battle ship. She can steam into the wind, and her hull form
can be optimized to sail with the wind instead.
Most of the required technologies were available during the Napoleonic
Wars, but historically it took some time to bring them all together. The
key innovation was the screw propeller, which put the engines below the
water line and kept the gun decks free for a heavy broadside. The third
rate mounts 32-pounders on the lower gun deck, 18-pounders on the upper
gun deck, and 9-pounders on the quarterdeck and forecastle -- her bow
lines leave no room for extra carronades.
The steam battleship is unlikely to appear at faraway naval stations.
If she does, excitement and adventure are sure to follow. Heroes might
be sent to cut her out, or to protect her against such mischief.
The steam engine burns 0.75 tons of coal per hour. The usual load of
coal, food, and ammunition is $493,848.
Subassemblies: Body +9, Mast #1-3 +4, Open Mounts #1-3 +3.
Powertrain: 48,000-sf standard full rig with cloth sails; 300-kW rugged
screw propeller; 300-kW rugged early steam engine.
Fuel: 7,200-cf coal bunker.
Occ: 4 NCS, 30 XRSR [Open Mounts], 676 CSR, 600 hammocks, 120 bunks, 20
cabins, 10 luxury cabins.
Cargo: 5,200 cf.
Armor F RL B T U
Body: 3/90 3/90 3/90 3/90 3/90
Masts: 3/50 3/50 3/50 3/50 3/50
Weaponry
14 32-pounders [Bod:R] (120 rounds each) +0.
14 32-pounders [Bod:L] (120 rounds each) +0.
14 18-pounders [Bod:R] (120 rounds each) +0.
14 18-pounders [Bod:L] (120 rounds each) +0.
9 9-pounders [Bod:R] (120 rounds each) +0.
9 9-pounders [Bod:L] (120 rounds each) +0.
Equipment:
Body: Three sets of navigation instruments; armoury workshop;
blacksmith workshop; carpentry workshop; engineering workshop; sewing
workshop; 25-man conference room; two 2,400-lb. external cradles;
3,600-lb. external cradle; 67,500 man-days of provisions. External:
4,167 sf top deck.
Statistics
Size: 240'x48'x240' Payload: 2,000,000 lbs. Lwt.: 5,000,000 lbs.
Volume: 252,392.8 cf Maint.: 7 man-hours Price: $1,834,975
HT: 7. HPs: Body 37,500, Mast #1 1,000, Mast #2 1,200, Mast #3 800,
Open Mounts 500 each.
Under sail, light breeze:
wSpeed: 14 wAccel: 0.2 wDecel: 0.2 wMR: 0.02 wSR: 5
Draft 14'. Flotation Rating 13,000,000 lbs. MUA 55°.
Under sail, fresh breeze:
wSpeed: 19 wAccel: 0.4 wDecel: 0.2 wMR: 0.02 wSR: 5
Under steam power:
wSpeed: 6 wAccel: 0.01 wDecel: 0.2(0.21) wMR: 0.02 wSR: 6
Design Notes
Body is 250,000 cf, with average lines. Mast #1 is 583.2 cf. Mast #2
is 800 cf. Mast #3 is 409.6 cf. Open Mounts #1 to #3 are 200 cf each,
mounted on Masts. Structure is medium, standard. Armor is standard wood.
Waterproofed. Mechanical controls. 1,680 rounds of 32-lb. solid shot and
1,680 rounds of LE, 1,680 rounds of 18-lb. solid shot and 1,680 rounds
of LE, 1,080 rounds of 9-lb. solid shot and 1,080 rounds of canister are
stowed in the Body. 1,580.13 cf of empty space in the Body. Empty weight
is 3,000,000 lbs.
Weapon Weight Volume Cost WPS VPS CPS Ldr. TL
9-pounder 2,600 130 $5,600 14 0.093 $2.8[1] 3 5
18-pounder 4,100 205 $8,600 27 0.18 $5.4[2] 4 5
32-pounder 6,100 305 $13,000 48 0.32 $9.6[2] 6 5
Ammo Type: [1] Solid, also fires canister (x0.67 weight). [2] Solid,
also fires LE (x2 cost, x0.67 weight).
Weapon Ammo Malf. Type Damage SS Acc 1/2D Max RoF
9-pounder solid 16 cr. 6d*5 30 6 520 2,300 1/20
canister 16 cr. 1d 30 1 87 380 1/20
18-pounder solid 16 cr. 6d*7 30 6 580 2,500 1/22
LE 16 exp. 6d*9[10d] 30 6 580 2,500 1/22
32-pounder solid 16 cr. 6d*8 30 6 640 2,700 1/27
LE 16 exp. 6d*16[10d] 30 6 640 2,700 1/27
The vehicle uses the design rules from Vehicles [second edition, third
printing, July 2010 errata], VXi, and VXii (the armor volume rule) with
the text format from Vehicles Lite.
Next Week: An ironclad.
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