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Wall of Fire

School evocation [fire]; Level bloodrager 4, druid 5, magus 4, sorcerer/wizard 4, summoner 3; Domain fire 4

CASTING

Casting Time 1 standard action
Components V, S, M/DF (a piece of phosphor)

EFFECT

Range medium (100 ft. + 10 ft./level)
Effect opaque sheet of flame up to 20 ft. long/level or a ring of fire with a radius of up to 5 ft./two levels; either form 20 ft. high
Duration concentration + 1 round/level
Saving Throw none; Spell Resistance yes

By the way...
A wall of fire cast on the deck of a ship moves with the ship and can start on-board fires. Otherwise, the wall does not move with the ship, and does not start on-board fires.

Source Skull & Shackles Player's Guide