static inline Owner GetCanalOwner(TileIndex t)
{
	assert(HasTileWaterGround(t));

	if (GetWaterClass(t) != WATER_CLASS_CANAL) {
		return GetTileOwner(t);
		} else { 
		Owner co = (Owner)0;
		SB(co, 0, 2, GB(_me[t].m6, 0, 2));
		SB(co, 2, 2, GB(_me[t].m6, 6, 2));
		return co == OWNER_TOWN ? OWNER_NONE : co;
	}
}

static inline void SetCanalOwner(TileIndex t, Owner co)
{
	assert(HasTileWaterGround(t));

	if (GetWaterClass(t) != WATER_CLASS_CANAL) {
		SetTileOwner(t, co);
	} else {
		if (co == OWNER_NONE) co = OWNER_TOWN;
		SB(_me[t].m6, 0, 2, GB(co, 0, 2));
		SB(_me[t].m6, 6, 2, GB(co, 2, 2));
	}
}