of mud.
very soft for
a thickness.
of
and then
211
very
time a 31 fert Manila woodpile 13°
was driven 10 ft into the mud and appeared firm, but on the 14th of the same month it was shaky, and we removed with little difficulty by the tractions. About this
Mills R.E. in a steam launch and with the aid of setting up on the craft.
to
I believe that if possible the breakwater should be brought up to a sufficient height to prevent the passage of small boats, even at high tide and that it should be sufficiently strong at all points of its length to make it impossible for an iron-clad to run and get through it.
I should propose that if junks are used, they should be placed thus. Two of the biggest class should be moored alongside each other, and for end, that is the stern of one to the bow of the other, getting a more uniform depth of obstruction, when in position they would be scuttled with masts and sails standing. They would no doubt settle into the mud 4 or 5 feet, which would give for the biggest junk about 15 feet of water obstructed from the bottom. The total depth in 4½ fathom water at extreme high tide, would be 27 + 6 = 33 feet, or still 17 feet to provide for and to meet this, I would sink one of the smaller sized junks, say No. 3 size on the top of the two sunk side by side.
This