Sea legs (Sailor)

You have the constitution of seamen. While serving on a boat or ship or other watercraft, or perhaps from your nature, you do not suffer the common ills of landlubbers, and pay attention to the conditions of the sky and waters.

• You are immune to penalties from being unfamiliar in a watercraft, including any sickness (Poisoned) from the motions of the water.
• You are steady on your feet, and immune to losing your balance (Acrobatics) in all but stormy conditions, and gain advantage in keeping steady even then.
• You may three times per day when on a watercraft make a weather check (Nature or Perception) at advantage to spot what is likely ahead for the next 8 hours. This resets each dawn. From your experience you picture the natural weather though you know Nature can change at a whim (and Druidcraft shows the limitations of magic over practical experience):
  • Slow going -- no significant weather expected; bright sun (expected wind is calm, light air, light breeze, or gentle breeze; waves are calm, smooth, or slight)
  • Quick going -- light storms may come or not; keep an eye on the weather (expected wind is moderate breeze, fresh breeze, or strong breeze; waves are rough to moderate rough)
  • Worrisome -- moderate storms expected; the bosun or first mate will want to know (expected wind is near gale, gale, or strong gale; sky is discolored; waves are very to high rough)
  • Heavy seas -- strong storms are on their way toward you; inform the captain and prepare now (expected wind is storm, violent storm, or typhoon; weird sky, the air tastes wrong; waves are high to vary high to phenomenal)
  • Utter disaster -- you spot an oncoming maelstrom, rogue wave, waterspout or similar, and it will hit soon; inform the captain that survival is up to the gods

(Many homebrew feats for Sea legs focus land campaigns, and more mechanical benefits. This feat version focuses on water and role-playing, and is particularly suitable for granting at first level to any player with the Pirate or Sailor background.)