Bigcraft

Line Combatants (Primary - Capital)				Escort Combatants (Secondary - Subcapital)				Military Auxiliary (Tertiary)
B- Battleship	C- Cruiser	O- Ortillery	V- Carrier	D- Destroyer	E- Escort	F- Fighter	H- Defense/Security	I- Combat Transport	Q- Combat Support	S- Scout	U- Utility	X- Commo	Z- Special

Mercantile Commercial Ships (Trade & Profit)				Non-Mercantile Commercial Ships (Industry & Profit)					Non-Commercial Ships (Nonprofit)			System Craft (Intrastellar)
A- Tramp	M- Freighter	R- Liner	T- Transport	G- Industrial	J- Prospector	K- Expedition	P- Corsair	U- Utility	L- Science	N- Medical	Y- Private	WB- Barge	WA- Satellite	WO- Space Station

Bigcraft are non-jump capable vessels with a displacement of more than 100 Tons.

• They may serves as Subcraft carried within a larger ship.
• They may serve various roles such as Battle Riders, SDBs, Monitors, Barges, etc.

Library Data Referral Tree

Please refer to the following AAB Library Data for more information:
Starship:

• Starship User Types
  • Civilian Ship
  • Military Ship
  • Non-Commercial Vessel
  • Paramilitary Ship

• Advanced Ship Classifications
  • Ship Mission Code / Supraclass
  • Ship Type Code / Superclass
  • Ship Class Code / Class
  • Model (TL)
  • Bloc (Lot)

• Basic Ship Classifications
  • Adventure Class Ship
  • Battle Class Ship
  • Capital Ship
  • Fleet Class Ship
  • Size-Role Classification
  • Subcapital Ship
  • QSP
  • USP
  • World Class Ship

• Ships by Function
  • Bigcraft
  • Boat
  • Capital Ship
  • Largecraft
  • Non-starship
  • Smallcraft
  • Spaceplane
  • Spaceship
  • Starship
  • Subcapital Ship
  • Subcraft
  • System Craft
  • Warship

Speed of Travel

• Astronomical Unit (AU)
• FTL
• Light Speed (c)
• Light-week (lw)
• Light-year (ly)
• NAFAL (STL)
• Parsec (pc)

Description (Specifications)

There are two factors that set bigcraft aside from smallcraft or starcraft:

1. Bigcraft differ from smallcraft in that they are larger. Smallcraft cap out at 99.99 tons. Bigcraft are a hundred or more tons in size. Bigcraft could theoretically be equipped with a jump drive.
   1. Bigcraft may be very large fighters, attack boats, or battle riders and thus also be subcraft.
2. Bigcraft differ from starcraft in that they are not equipped with a FTL Jump Drive. Bigcraft are system craft, meant for intraplanetary travel, not trans or interplanetary travel between stars and star systems. Starcraft travel between stars. Bigcraft or spacecraft, in the pure sense, are not.
   1. Bigcraft may be interplanetary if thus intended, but not FTL. They are NAFAL or STL. Generation Ships and Sleeper Ships are the two most common examples of this idea.

Naval Ship Synopsis by Size-Role

These vary in tonnage and in their intended function or role in fleet maneuvers and tactics. The security of the state is usually the primary design imperative.

Ship Classification by Size
#	Type	Tonnage	Examples	Remarks
1.	Smallcraft	0 to 99 tons	Shuttle Gig Fighter	Smallcraft are typically Subcraft, designed to be carried by carrier craft.
2.	Spacecraft	100 tons or larger	SDB Rider Monitor	Spacecraft are in-system vessels, lacking interstellar drives. Some Spacecraft are Subcraft, designed to be carried by carrier craft.
3.	Adventure Class Ships (ACS)	100 to 2,499 tons	Merchant Escort Mercenary Cruiser	Adventure Class ships are usually jump-capable. They serve many roles including customs, patrol, planetary defense, tramp freighters, etc.
4.	Battle Class Ships (BCS)	2,500 to about 1,000,000 tons	Cruiser Bulk Trader Battleship Sleeper Ship	Battle Class ships are warships. They are usually jump-capable. Such ships require major investment and only service major roles including megacorporate interstellar trade, warships, Capital Ships, and major endeavors.
5.	World Class Ships (WCS)	Larger than 1,000,000 tons	Loeskalth planetoid generation ship.	World Class ships are beyond expensive and represent suprapolity-level investment. They take many years to build. This class represents immense World-Ships, very large Super Dreadnoughts, Superweapons, etc. Operational staff are typically residents as much as crew. These ships are interacted with as worlds or events, rather than ships.

Escort Combatants (Secondary) - The Lightcraft Hierarchy

A number of smallcraft and ACS combatants exist:

1. Smallcraft (F or U) (0 to 99 tons)
2. Bigcraft (W or Other) (100 or larger tons)
3. Escort (E) (100 to 2,499 tons)
   1. Brig (EB) (100 to 2,499 tons)
   2. Close Escort (EC) (100 to 2,499 tons)
   3. Frigate (EF) (100 to 2,499 tons)
   4. Corvette (EG) (100 to 2,499 tons)
   5. Sloop (ES) (100 to 2,499 tons)
4. Destroyer (D) (2,500 or larger tons)

History & Background (Dossier)

Bigcraft with all their various missions remain popular throughout Charted Space for the simple reason that omitting a jump engine, hull grid, and related ship equipment is a tremendous savings in cost, manufacturing, and a number of other factors.

Jump Drives are tremendously expensive, complicated, and difficult to research and master. It's simply easier to design system ships for which there can be tremendously greater efficiencies of cost and manufacturing.

Bigcraft vs. Largecraft

• Bigcraft are NAFAL boats over a 100 tons without a jump drive.
• Largecraft are FTL vessels over a 100 tons with a jump drive.

References & Contributors (Sources)

This article is missing content for one or more detailed sections. Additional details are required to complete the article. You can help the Traveller Wiki by expanding it.

This list of sources was used by the Traveller Wiki Editorial Team and individual contributors to compose this article. Copyrighted material is used under license from Far Future Enterprises or by permission of the author. The page history lists all of the contributions.

• Marc Miller. T5 Core Rules (Far Future Enterprises, 2013), TBD.
• Traveller Wiki Editorial Team
• Author & Contributor: Lord (Marquis) and Master of Sophontology Maksim-Smelchak of the Ministry of Science