pub fn write_faction_seas(
layout: &StartposLayout,
plan: &CaiPlan,
world: &WorldView,
map_regions: &[MapRegion],
) -> Result<RecordNode>pub fn write_faction_seas(
layout: &StartposLayout,
plan: &CaiPlan,
world: &WorldView,
map_regions: &[MapRegion],
) -> Result<RecordNode>