DCSA provided on ALL Hunt class RB1 runs

From a customer service point of view the passengers aboard an RB1 service really require a visible point of contact, in the form of a DCSA. The mate is required to spend a significant amount of time in the wheelhouse & can not be available to passengers at all times.
From a operational point of view, having a DCSA means the ability to double load/unload, which will greatly improve timekeeping on service.
From a safety point of view the additional crew member provides extra vigilance, and an enganced ability to perform well during emergency situations.