State Navy Board
[Philadelphia] June 6. 1777
Captain Blewer, and Joseph Marsh being appointed yesterday by the Board to survey the Chevaux de Frize, and to sound the middle Channel, do report, that there is sufficient Water for a Vessel drawing from Twelve to Eighteen feet water.
Resolved, that Mr Marsh be appointed to attend the building of a sufficient number of Chevaux de Frize for the Obstructing of the Middle Channel.
1. Record Group 27, Navy Board Minute Books, vol. 1 (Feb. 13-July 7, 1777), Pa. Arch. Here after cited as Navy Board Minute Books, vol. 1, Pa. Arch.
