During his stay in Lima, his first step was the reorganization of the naval power to counteract the material superiority of the Chilean Navy, obtained after the naval actions of Admiral García del Postigo in Callao, the protector Andrés de Santa Cruz thought to obtain the help of foreign sailors and merchant ships under the Callao to which he granted red-letter and armed to operate against the Chilean squadron that blocked the port and, unhindered, freely transported the forces of the united restoration army under the command of General Manuel Bulnes.

Major Bynnon who had been in charge of blocking the port by order of Admiral Del Postigo suffered from several weeks of problems to maintain the blockade due to lack of provisions and the fatigue of his men, the ships were in poor condition and need to be repaired.

It was his intention to separate the Edmond corvette and the Shanrock schooner from the smaller vessels commanded by San Julián, which he considered to be of greater danger in the face of being approached by them.

The Chilean ships also turned to follow their enemy until they approached the head of the island of San Lorenzo, where they remained for the rest of the day without the Confederate naval forces trying again to leave the shelter of the port.

The strategic error of Commander Bynon forced the Chilean fleet to lift the blockade of the Confederate ports to direct their efforts to protect their transport and lines of communications.