India further argues for its position that the boundary lies mid-channel, as depicted in another map drawn in 1925 and implemented by the installation of mid-channel pillars back in 1924. Though Pakistan does not dispute the 1925 map, it maintains that the doctrine is not applicable in this case as it most commonly applies to non-tidal rivers, and Sir Creek is a tidal estuary. India rejects the Pakistani stance by maintaining that the creek is navigable at high tide, the thalweg principle is used for international boundaries in tidal waters, and fishing trawlers use Sir Creek to go out to sea.