BEIJING, Mar. 9 -- The comprehensive supply ship Hulunhu (Hull 901) from a combat support ship flotilla and the 10,000-ton Type 055 guided-missile destroyer Lhasa (Hull 102), both attached to the navy under the PLA Northern Theater Command, carried out an underway replenishment-at-sea operation during a round-the-clock and multi-subject maritime training exercise recently. The exercise aimed to hone the troops' all-weather operational support capability.