In December 1920, "Beaver" received orders to repeat her 1919 service by escorting six S-boats of SubDiv 18 to the Pacific. This time, however, she was to convoy them all the way to the Philippine Islands. After several months of preparation, the division sailed via the Panama Canal and San Pedro, California, to Hawaii. From there, the tender and her charges made the long non-stop run from Hawaii to Guam. After a stop for fuel and supplies at Apra, the division arrived off Sangley Point in Manila Bay on 1 December 1921. Over the next six months, the tender's crew helped improve the submarine base at Cavite and supported local operations by the division's diesel boats.