If the 50Dton Modular Cutter is the workhorse of the Imperium, then there has to be a mule somewhere to carry all those cutter modules from system to system.  The Transit-class is designed to service those small out of the way worlds that are seldom visited by larger vessels.  The Transit-class is a small interstellar barge that can carry two standard 30Dton Modules.   It is capable of Jump 1 and 1G Acceleration.  The crew complement is two (Captain/Pilot and Engineer). It has one hardpoint but few examples are armed.  Many of these vessels are in use as family Traders, often with one module space taken up with family accommodation and the other used to transport cargo.

Traveller High Guard Stats

Ship: MV Transit Star
Class: Transit
Type: Merchant
Tech Level: 9

USP
AL-1411111-020000-10000-0 MCr 37.658 125 Tons
Bat Bear             1     1       Crew: 2
Bat                  1     1       TL: 9

Cargo: 3.500 Crew Sections: 1 of 2 Fuel: 13.750 EP: 1.250 Agility: 0
Craft: 2 x 30T Modular Cutter Modules
Fuel Treatment: Fuel Scoops and On Board Fuel Purification

Architects Fee: MCr 0.377   Cost in Quantity: MCr 30.126

Detailed Description
(High Guard Design)

HULL
125.000 tons standard, 1,750.000 cubic meters, Close Structure Configuration

CREW
Pilot, Gunner

ENGINEERING
Jump-1, 1G Manuever, Power plant-1, 1.250 EP, Agility 0

AVIONICS
Bridge, Model/1 Computer

HARDPOINTS
1 Hardpoint

ARMAMENT
1 Dual Mixed Turret with: 1 Beam Laser (Factor-1).

DEFENCES
1 Sandcaster in the Mixed Turret, organised into 1 Battery (Factor-2)

CRAFT
2 30.000 ton Modular Cutter Modules (Crew of 0, Cost of MCr 0.000)

FUEL
13.750 Tons Fuel (1 parsecs jump and 28 days endurance)
On Board Fuel Scoops, On Board Fuel Purification Plant

MISCELLANEOUS
2 Staterooms, 3.500 Tons Cargo

This plan shows a standard Cargo-Module and a Portable Field Shop-Module.  For more examples of common modules see this post.

To see two more Jump module haulers go to the posts for the 200Dton Jump Barge and the  400Dton Modular Jump Cutter.