 As the submarines were small, and suffered from engine breakdowns, the tender had to tow as many as three submarines at a time during the long stretches between ports.The convoy stopped at Magdalena Bay and Acapulco in Mexico and at Corinto, Nicaragua, before mooring at Coco Solo in the Canal Zone on 28 August.Following two weeks of repairs, the convoy transited the canal on 11 September and arrived at Hampton Roads, Virginia, via Key West, Florida, on the 29th.