Drive and Power — Engineering Status

Delta-V Budget

19.4M m/s

↑ 8.6% YoY

Reactor Vs Spec

107.0%

Core integrity 99.2%

Net Delta-V · T3W

176.5k/watch

164.8k last watch

01Break-In

Break-In Faults

New-part fault rate

Fresh parts fail 3.5× more often than aged stock · 78% of W-54 faults came from parts under 3 watches aboard

Wear

3.5×

New vs aged fault rate

Under 3 watches0.5%Aged stock0.1%

78% of W-54 faults came from parts under 3 watches aboard

02Reactor Uptime

Reactor Uptime

Running above spec

94% of watches at or above spec · low 0.923× on W-18

Reactor

1.070×

+7.0pp vs spec · 52.3 MW

Vs spec1.070×Output52.3 MW

03Net Delta-V

Net Delta-V

Delta-v gained minus spent

four straight watches of net gain

Drive

+176.5k m/s

Net delta-v · 4 straight watches of net gain

four straight watches of net gain

04Power Draw

Power Draw

Reactor output by system

52.3 MW on W-54 · life support never drops below 5.9 MW

Reactor

53%

Drive share of output · 52.3 MW total

Epstein Drive53%Weapons6%Life Support41%

05Burn Mix

Burn Mix

Delta-v spent by burn type

89 burns logged · 22.1M m/s spent

Drive

27.1%

Combat maneuvering leads delta-v spend

89 burns logged · 22.1M m/s spent

06Systems

Systems · Readiness

Ship systems readiness

Railgun lowest at 88.0% · Epstein Drive takes 31% of maintenance budget

Gunnery

31%

Maintenance share · Epstein Drive

Railgun lowest at 88.0% · Epstein Drive takes 31% of maintenance budget

07Heaviest Burns

Delta-V Concentration

Heaviest burns on the log

Ring Gate Transit · 8.10g peak

Drive

28.0%

Heaviest burn · Ring Gate Transit

Ring Gate Transit · 8.10g peak

08Old Parts

Parts by Install Year

Still in service

14 parts from MCRN 2344 still in service in year 7

Wear

7yr

MCRN 2344 · 222.4k replacement cost

14 parts from MCRN 2344 still in service in year 7

Two lines with the gap shaded. Fresh parts fail several times more often than aged stock, and the gap is the story: a component that survives its first few watches under thrust has proven it can.

This is the argument for not replacing something that works. Every new part is a bet, and the break-in curve is the odds on that bet.

Above 1.0 means she is running hotter than Mars ever certified her for, which is most of the time. The dips line up with the hard burns — sustained high-g is when the reactor is asked for everything at once.

A Martian-built reactor's reputation rests on doing things the spec sheet says it cannot. This chart is that reputation, measured.

The drive takes the majority and takes more the harder she burns. Weapons spike only during engagements. Life support is the flat band at the bottom that never gets to be optional.

Power is a fixed pie during a fight. Knowing which system is eating it tells you what the ship can still do in the next thirty seconds.

Combat maneuvering costs the most per burn but happens rarely. Course corrections are individually cheap and relentless. The ranking is by total delta-v, not by how dramatic the burn felt.

Crews remember the fights. The fuel gauge remembers the thousand small corrections. This chart settles the argument about where the budget actually went.

Named burns with what each cost, the peak g held, and how long the crew was under it. The top entries are the ones the crew rode out in the couches on the juice.

Concentration matters: if a handful of burns account for most of the budget, the ship's range is really a question of how often it has to do that again.

Readiness is what the system can deliver right now. Maintenance share is what it costs to keep it there. The railgun is the obvious outlier: lowest readiness, and it has gone the longest without a full service.

A ship is only as capable as its worst-maintained critical system. This is the list the crew argues over when there is time for exactly one repair.

Older cohorts are small but heavy: the parts that survive years of hard burns tend to be structural, expensive, and not worth replacing until they fail outright.

A part that has been through everything this ship has been through and still works has earned its place. The old cohorts are the ship's actual spine.