Example Ships - Gate Builders

The Terran Federation has laid down plans for the Portland-class construction ship, however they have yet to build any.

Portland class Construction Ship    8950 tons     887 Crew     1298.4 BP      TCS 179  TH 720  EM 0
5363 km/s     Armour 1-38     Shields 0-0     Sensors 1/1/0/0     Damage Control Rating 5     PPV 0
Annual Failure Rate: 128%    IFR: 1.8%    Maintenance Capacity 453 MSP    Max Repair 50 MSP
Jump Gate Construction Ship: 180 days

Magneto-plasma Drive E8 (12)    Power 80    Efficiency 0.80    Signature 60    Armour 0    Exp 5%
Fuel Capacity 200,000 Litres    Range 50.3 billion km   (108 days at full power) 

This design is classed as a non-combatant for maintenance purposes

The design is kept current as technology progresses. With no internal cargo capacity, Essex-class freighters would be assigned to the construction battalions.