viewtopic.php?f=89&t=119916

with steve's LASH concept:

viewtopic.php?p=914262#p914262

we get:

Flexible Breakaway Ship System

We start with a 160 dT jump spine with crew quarters (8 crew), a 40 dT bridge, and a 50 dT jump drive (MCr 106) that can do J-1 with 1800 dT, J-2 with 900 dT, and J-3 with 600 dT. Fuel by a 150 dT streamlined exterior tank (drop tank). To this we can attach breakaway sections with the desired capability. Each section contains m-drive (1 G), power, and a basic bridge. The jump spine and selected sections are streamlined, sections carrying external payload are dispersed.

**Jump Spine**: Streamlined, 160 dT, Crew: 8 (Pilot, Nav, Purser/Admin, 5[Eng+Maint]). MCr 104

**Thrust Section**: Streamlined, 40 dT, Provides 1 G extra thrust for 1800 dT, requires one extra Engineer. MCr 40

**External cargo section**: A dispersed 10 dT section with external cargo mounts and jump nets for 300 dT. Cockpit, 1G. MCr 9

**Clamp section**: Light 10 dT, 5 × 30dT clamp, MCr 7; Medium 20 dT, 300 dT clamp, MCr 11, Heavy, 50 dT, 1500 dT clamp, MCr 43. Cockpit, 1G.

**Shuttle, Cargo/Fuel**: Streamlined, 30 dT, M-3, Grav, 20 dT cargo, Cargo crane, Grappling arm, MCr 10

**Internal Cargo Lighter**: Streamlined, 100 dT, M-3, Grav, 80 dT cargo, Cargo crane, MCr 22

**Internal Cargo Lighter, Large**: Streamlined, 300 dT, M-2, Grav, 260 dT cargo, Cargo crane, MCr 52

**Passenger Lighter**: Streamlined, 100 dT, M-2, Grav, 15 staterooms, 30 escape capsule, 8 dT hydroponics, 1 dT cargo, MCr 26

**Liner Section**: Streamlined, 260 dT, M-1, 44 staterooms, 62 escape capsule, 22 dT hydroponics, 5 dT cargo, MCr 56

We can combine sections as we see fit, e.g.:

**Bulk hauler**, 1800 dT, J-1: Jump Spine (160 dT, MCr 95), Drop tank (180 dT, MCr 4,5), 5 × Ext Cargo (50 dT + 1410 ext cargo, MCr 45)

**Slow LASH**, 1800 dT, J-1: Jump Spine (160 dT, MCr 95), Drop tank (180 dT, MCr 4,5), Thrust section (40 dT, MCr 40), 4 × Large Cargo Lighter (1200 dT, MCr 208), 2 × Passenger Lighter (200 dT, MCr 52)

**Wilderness trader**, 900 dT, J-2: Jump Spine (150 dT, MCr 95), Drop tank (180 dT, MCr 4,5), Passenger Lighter (100 dT, MCr 26), Cargo Lighter (100 dT, MCr 22), 2 Shuttles (60 dT, MCr 20), Ext Cargo (10 dT + 290 dT cargo)

**Liner**, 600 dT, J-3: Jump Spine (160 dT, MCr 95), Drop tank (180 dT, MCr 4,5), Liner section (260 dT, MCr 56)