Clusterships functioned as transport vehicles for yammosks in Yuuzhan Vong military fleets. To assist the yammosk, these ships were fully staffed with shapers. Additionally, members of the priest caste were present to provide blessings, and warriors offered protection. The yammosk, however, was the entity that actually piloted the ship and sustained its life functions. Given the unique strategic and religious significance of the yammosk, clusterships received substantial protection, and the warriors on board could withdraw from combat without facing dishonor or becoming shamed.