Low passage is not cryogenic freezing; it is a drug(gas) induced hibernation/coma state in a sealed cool tube and it is not suitable for very extended periods, in most other respects it is the same (cost etc), it may be referred to as ‘Cold Sleep’, ‘Hibernation’ or ‘Low Passage’. Other euphemisms may apply.
A week in hibernation is equivalent to a day in terms of needs requirements and aging etc. For example, after a week in hibernation you feel like you haven’t eaten or drunk for a day. Spending four weeks (or more) in hibernation requires an End roll once per week, failure means death. Apart from the risk of death due to lack of nutrients & fluid from an extended period in Hibernation it is reasonably safe and no other survival/health rolls are required.
Hibernation periods can be extended if a doctor is available to monitor and ensure nutrients can be injected into the subject, this is not a common function of standard hibernation tubes.
Inertia Dampening aka ‘G’ Compensator:
Ships or vehicles with acceleration greater than 1G may only use the acceleration for limited periods of time, unless they have G compensator installed. Prolonged periods of high acceleration will otherwise injure the crew and passengers.
Artificial gravity ‘G compensator’, is a function of the M drive. It creates an artificial gravity field in direct opposition to the axis of acceleration, thus negating the acceleration (up to the limit of the M drive). Compensated Gs is the number of acceleration or evasion Gs negated by the compensator, which is usually equivalent to the output of M drive. In this way a ship can ‘reduce’ or negate the effect of an impact up to its thrust rating in ‘G’, for example a ship that has a 10 G collision will only feel a 5 G collision.
At the heart of standard M-drives is a gravetic device which can exert a g-field in concert or in opposition to any gravity field (relative to its strength), up to the M-drive rating for the ship. For planetary operations this is basically up or down; down will be fast as you add the planets gravity! In space this will vary considerably, but might be very small. For normal ‘thrust’ the M-drive accelerates ions/particles out of the thruster nozzles, this can be vectored.
Usage of available (stateroom) life support is based upon actual stateroom occupancy per month (4 weeks) by one or two persons (max). However, additional tonnage of ‘spare’ life support may be kept in the cargo hold for prolonged endurance missions or for emergency operation. In extremes, operating in harsh emergency life preservation situations, breathable air for around six times its normal duration (5,000 person hours per stateroom), except in space without power, where it will only be good for half its normal duration (2 weeks).
An additional 0.01 dton of life support will supply a stateroom (max of 2 persons) per month and costs 2,000 credit (base cost). This includes preserved foods, water, supplemental oxygen, basic sanitation, basic medical, basic clothing/blanket, inflatable mattress, chemical power cells/heating, air recycle/filtration materials and other essential supplies. Life support requires power, otherwise is only good for two weeks. Usually this includes certificates or guarantees regarding suitability and quality of the supplies.