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Gargantuan watercraft (armored gunboat, 170 ft. by 50 ft.)
Creature Capacity: 278
Cargo Capacity: —
Travel Pace: Maximum: 9 mph; Cruise: 4½ mph
Cost: 73,600 gp
Weight: 15 tons
- The river gunboat ironclad has the following features:
Occupancy: Short occupancy. 268 poor seats for enlisted men, 8 comfortable seats for officers.
Design Notes: Mass xi body (600 tons laden). Acceleration: 8 feet. Plating: 2.5 (front), 4 (center), 1 (rear), 0 (top), 0 (underside). Water drag: −5
| Slot |
Component
|
| 1 |
Iron structure* – full, AC 18, 2 SP, thick plating (front) |
6,000 gp
|
| 2 |
Artillery – 2× 8-inch smoothbore muzzleloaders (fowards) |
6,000 gp
|
| 3 |
Helm* – 3 stations |
3,000 gp
|
| 4 - 7 |
Seating** – 60 poor seats each |
2,000 gp each
|
| 8 |
Bunker – 30 tons of coal |
–
|
| 9 |
a. Compound steam engine* – generates 1/8 PP
b. Water tank |
6,000 gp
300 gp
|
| 10 |
a. Compound steam engine* – generates 1/8 PP
b. Water tank |
6,000 gp
300 gp
|
| 11–12 |
Iron structure – full, AC 18, 2 SP, thick plating (center) each |
6,000 gp each
|
| 13 |
Bunker – 30 tons of coal |
–
|
| 14 |
Artillery – 2× 8-inch smoothbore muzzleloaders (left) |
6,000 gp
|
| 15 |
Wood structure – frame, AC 12, 8 SP |
600 gp
|
| 16 |
Wood structure – full, AC 15, 1 SP |
600 gp
|
| 17 |
Cargo hold – 15 tons
Magazine – 10,000 lbs |
–
300
|
| 18 |
Artillery – 2× 8-inch smoothbore muzzleloaders (right) |
6,000 gp
|
| 19 |
a. Paddlewheel, feathered* – 1/4 PP transmission rating
b. **Berth** – cradles for 5 tons-worth of boats |
10,000 gp
500 gp
|
| 20 |
Seating** – 8 comfortable seats, 28 poor seats |
2,000 gp
|
* 1 workspace per component
** Here, "seating" just means areas short-term occupancy for crew and passengers, it's literally the decks and small private rooms for the officers.
Dimensions. 2 decks
Draft. 6 feet.
Endurance. Each bunker of 30 tons of coal consumed fuels the steam engine for 8 hours (maximum speed) or 32 hours (cruise speed). The water tanks replenish themselves from river water; they otherwise fuel the steam engines for 20 minutes.
Steam Engines. From a cold start, it takes 30 minutes to build up the heat and pressure before the steam engines provide power. Each engine requiers 1 stoker.
Damage Threshold. Optionally, the damage threshold of the boat varies depending on the diretion of the attack made against it, due to different thicknesses of armor plating.
- Front: 20
- Center: 30
- Rear: 17
- Top: 15
- Underside: 15
Example Crew
Skeleton Crew: The mininum crew required to operate the gunboat: 1 pilot, 2 steam engine stokers, 5 workspace technicians.
Minimum Wartime Crew: 9 helm crew, 6 stokers, 15 workspace technicians (working over 3 shifts); 24 gun crew; 8 officers; 60 marines
Full Wartime Crew: Up to a total of 278 people.
Occupancy: Short-term occupancy (a few days), on-board supplies supplemented by supply ships, or from what the crew can gather from the riversides.
Berth: Cradles for up to 5 tons-worth of boats (cost not included).
Piloting Maneuvers
If you are a helm station, you can use your action to:
- Turn: The boat rotates 45-degrees
- Accelerate: You use the engine order telegraph to signal the crew in the engine room. The boat's speed increases by 5 feet to a maximum of 90 feet.
- Decelerate: The boat's speed decreases to a minimum of 0 feet.
Hull
Armor Class 18
Hit Points 350 (damage threshold 17)
Weapon: 8-inch Smoothbore Muzzleloader
Armor Class
Hit Points
Size: 100
Cost: 3,000 gp
Crew: 1 gunner, 4 loaders
Rate of Fire: It takes 6 rounds for a full crew to load, aim and fire the gun. It fires on the gunner's initiative count.
Ammunition: Each gun has a shot locker for 30 pieces of ammunition. Additional ammunition can be stored in the cargo hold.
Powder: Each shot requires a 7-lb service charge of smokeless powder.
8-inch Shot. Ranged weapon attack: +6 to hit, range 1,000 / 3,000 ft., one target. Hit: 93 (17d10) bludgeoning damage.
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An industrial-era armored boat intended for service on a river. It has a centrally-mounted feathered paddlewheel powered by two steam engines. The frame and hull is wooden, with 2-inch thick iron casemates for armor. The riverboat has a flat hull with a 6-foot draft. The two steamengines are noncondensing: a third smaller steam engine pumps river water into the boilers. The flat keel and reliance on freshwater make the boat is unsuited for coastal or ocean travel.
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