![2ed spelljammer ship construction 2ed spelljammer ship construction](http://www.spelljammer.org/ships/deckplans/Dolphin.gif)
This bonus does not stack with other enhancement bonuses. Ships whose hull or plating is composed of adamantine gains a natural enhancement bonus to AC. Adamantine: Found only in meteorites or asteroids and the rarest of veins in magical areas, this ultrahard metal is the ultimate shipbuilding material. Few ships bother with mithral because its primary advantage is its lightness, and this isn’t that important for most ships. Mithral: This is a very rare silvery, glistening metal that is lighter than iron but just as hard.
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Pyre iron has the added bonus of being very resistant to fire and heat (DR 50), though it also means it requires impressive magics to shape it. Getting to these asteroids typically requires magical protection, but because of the durability of pyre iron the dwarves are willing to pay the expense (and pass it on to their customers). Once smelted, pyre iron glimmers oddly, even without light, appearing as if flames danced across its surface. Asteroids with iron ore that orbit these primaries at just the right distance manage to absorb this energy without boiling away. Pyre Iron: While most all fire bodies have a connection to the elemental plane of fire, some sphere primaries have a “deeper” connection, and give off elemental energies that have nearly a spiritual component. The drawback to flowsteel is that it does not resist fire as well, and fire attacks against ships that use it do not halve their damage. Over the centuries this iron ore becomes what is referred to as flowsteel, and is highly coveted by the dwarves, who often drag asteroids into the flow, so as to “farm” the flowsteel at a later time. Flowsteel: The odd medium of the phlogiston has strange effects on many things that remain in it for long periods of time, and this includes iron ore within asteroids that find their way into the Flow. It is also surprisingly light, weighing one-third as much as granite. It is rare, but treasured by those who use stone to build ships, due to its durability. This matter calcifies quickly and becomes ætherstone. Ætherstone: There are places in wildspace where the barriers between the material plane and the ethereal plane break down, and streams of ethereal matter stream into our world.
![2ed spelljammer ship construction 2ed spelljammer ship construction](http://www.spelljammer.org/ships/deckplans/Mammoth.gif)
The neogi are fond of crystalline hulls for their ships, mined with the help of their umber hulk servants. Crystal is hard to mine in sufficient sizes and quantities, and so few ships use it. Crystal: Crystal is a type of stone, but it resists attacks better and is more durable. Stone: This is some form of durable stone, such as granite or marble, often mined from asteroids. Dark wood cannot be treated with iron wood solution the dark wood does not absorb it. Dark wood is stronger, but because it is found on fewer worlds and individual trees tend to be smaller, smaller, it is more expensive than normal wood. Dark Wood: There are a number of different tree types whose wood is collectively known as dark wood, and all of them grow in spheres whose primary gives off less light than normal. Normal wood can be treated with iron wood solution after a ship is built, and so is a popular upgrade. Iron Wood: Iron wood is normal wood that has been treated with iron wood solution, which is an alchemical concoction. Wood: This is normal terrestrial wood, typically a hardier variety such as oak. Bones are not particularly sturdy, but they do work. Bone: The bones of large creatures, such as kindori, are often used as ship s hip materials by the desperate and poor. For other materials the DM will need to determine its properites and costs. The most typical are detailed here and used throughout these rules. 1.b.12 3e Spelljammer: Ship Construction Materials A wide variety of materials are used in ship construction, and some are quite rare and wonderous.