* Expedition 21, is on its own somewhat less efficient than expedition 5, but it has a slightly lighter sparkling load; with 5 ships and drum canisters, it can easily attain a near-100% GSR | * Expedition 21, is on its own somewhat less efficient than expedition 5, but it has a slightly lighter sparkling load; with 5 ships and drum canisters, it can easily attain a near-100% GSR |