by John Marshall, Royal Naval Biography — Hamond… (1823)
“ Before the ships of war could proceed higher up the river, it was necessary that several machines, resembling chevaux-de-frize, which the enemy had sunk to block up the passage, should be removed. This arduous undertaking was entrusted to Captain Hamond, who, after much perseverance and great exertions, succeeded in weighing a sufficient number of them to secure a safe channel for the ships, notwithstanding he was greatly annoyed by the enemy’s floating batteries. The next object was to dislodge the Americans from the strong posts which they held at Red Bank and Mud Island. ”
