'Below Saugor Anchoring Buoy was surveyed between 2nd and 19 Dec 1844. Above it between Jan 13 and 23./45.' No scale given. Manuscript tracing by Barlow.
Surveyed in the early part of November 1843. Scale of 6000 yards [=4 inches]. A. Bedford, River Surveyor. Manuscript tracing by Barlow ('R. Fred: Barlow Transt: Dec: 14 / 1843'). Annotated by Barlow: 'Very doubtful if any copy exists of this aspect of the channel, either lithographed or engra...
Surveyed Sept: 1843. A. Bedford. Scale of 5000 yards [=5.15 inches]. Manuscript copy by Barlow ('R.F.B. copied Nov: 1843'). Additions by Barlow: The Outer Rangafullah Channel. As surveyed and buoyed off, April 1843.