Just a note of preference here, I would stipulate both Medical and Steward as required skills. In my games the steward is generally the person tasked with Life Support functions.
I started with that position too ... that a Medic and a Steward are required, but then later came to the conclusion that it doesn't quite work like that for Life Support and the all important Environmental Controls.
The way I see it is that the Medic is responsible for Health & Wellbeing of everyone aboard (crew and passengers), while the Stewards are only there to fulfill the customer service demands of high passengers (stewards are not needed for middle passengers, since those passengers have to "fend for themselves" when it comes to meals and laundry and other bits of personal upkeep).
It's an imperfect analogy, but it gets the point across for the distinction I'm trying to draw here.
In a restaurant, you have cooks in the kitchen and servers in the dining area.
So you have specialists to make the food that gets served (cooks), who are not public facing ... and you have servers who deliver food and drink to tables and handle all of the personal interactions with customers and are the "face" of the establishment that the customers "see" and can ask for (waiters).
So with regenerative life support of the Environmental Control
Type V-a through
Type V-e ... it is the responsiblity of the medical staff (health, nutrition, wellness, etc.) to act as the "engineers" of the regenerative life support system (the "kitchen crew" part of the above analogy), while it is the responsibility of the stewards to handle and manage the customer service needs of the high passengers (the "servers crew" part of the above analogy). Point being that with high passengers
you need both (medical and steward staff) ... but without high passengers, you only need medical, because you don't need stewards for middle passengers (and crew are essentially "salaried middle passengers" as far as that goes).
Now, if you want to get EXTRAVAGANT with your crew amenities and give them what LBB5.80 calls a Service Crew to handle basic services (shops and storage, security if there are no ship's troops, maintenance, food service [there's that waiter angle again] and other mundane operations aboard) ... you can effectively do so by adding Stewards. Using the LBB5.80, p33 entry on Service Crew as a guideline, you're looking at 2 Service Crew per 1000 tons of ship (round to nearest integer) with ships troops aboard, or 3 Service Crew per 1000 tons of ship (round to nearest integer) with no ship's troops. Standard salary rules for having more than one Steward aboard (Purser gets +10% salary on top of all other computations) apply as head of the department.
Steward positions assigned as Service Crew (LBB5.80, p33 style) are NOT available for high passenger service, since that is a separate crew position. However, since a single crew member can fill two crew positions (at -1 skill to each respective crew position) ... and because high passengers only require Steward-0 skill, it is possible to have a single crew member fulfill two duty assignments concurrently.
A 400 ton merchant ship (for example), if it had a Service Crew position assignment with no ship's troops aboard would need 400/1000*3=1.2=1 Steward crew position to fill the role. If the same ship also had accommodations for 8 high passengers, that would be a second Steward crew position required. So such a ship would have 2 Steward crew positions to fill.
The skill requirement to staff a Steward crew position is a minimum of Steward-0 skill.
So a crew member (PC or NPC) with Steward-1 skill would be able to fill both crew positions (yielding Steward-0/Steward-0 throughput to both positions, but meeting minimum requirements for the crew position).
Such a crew member would have +1 skill above the minimum skill level required for their position and earn +10% salary for that (native) skill level. They would also be filling 2 crew positions and get paid 75% for each position (LBB2.81, p8, p16).
So using the LBB2.81 pricing for crew salaries, the formula would look like this (use the skill level going "into" the crew positions, not the skill level you get "out" of them for the salary computation):
- Steward-1/Steward-1: ((Cr3000*1.1)+(Cr3000*1.1))*0.75*1.0 = Cr4950 per month
Not exactly bad work if you can get it (since that's almost "Navigator pay"!) as an "actually skilled" Steward.
If you had multiple "double crew position" Stewards, the Purser's salary as a Department Head would be computed like this:
- Steward-1/Steward-1: ((Cr3000*1.1)+(Cr3000*1.1))*0.75*1.1 = Cr5445 per month
- Steward-2/Steward-2: ((Cr3000*1.2)+(Cr3000*1.2))*0.75*1.1 = Cr5940 per month