Largecraft

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

Largecraft: Vessels at or over a hundred tons in weight or displacement are considered to be largecraft.

• While most bigcraft are considered to be NAFAL boats, most largecraft are considered FTL craft with jump drives.
• The two definitions possess some semantic overlap.
• Largecraft are the vast majority of star wandering vessels that are not smallcraft nor bigcraft.
• Some very early technology vessels were intended for interstellar voyages despite having only NAFAL engines and these antiquated vessels are considered bigcraft. They include sleeper ships and generation ships.

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)

Largecraft is the general catchall category for significant, star faring FTL vessels. The category excludes smallcraft and bigcraft… and little else. Almost any large starcraft is a largecraft. The term is so ubiquitous that few feel a need to mention it.

Naval Ship Synopsis by Size-Role

These vary in tonnage and in their intended function or role.

Ship Classification by Size in TL:13-15
#	Type	Tonnage	Class	Commonality	Remarks
1.	Smallcraft (Subcraft)	0 to 99 tons	Vehicle	Ubiquitous	Smallcraft are NAFAL or STL. Smallcraft are typically designed to be carried by larger carrier craft. Such vehicles are called Subcraft. This class represents Shuttles, Gigs, Fighters, etc.
2.	Bigcraft (Subcraft)	100 tons or larger	Vehicle or Ship	Uncommon	Bigcraft are designed for NAFAL capabilities, but some mistakenly call them FTL. Modern Bigcraft are generally designed to be carried by larger carrier craft as Subcraft. This class represents SDB's, Riders, and ship-sized subcraft including really large craft called fighters. Bigcraft do not mount jump drives. If they mount jump drives, they are called largecraft.
3.	Largecraft (Non-subcraft)	100 tons or larger	Vehicle or Ship	Uncommon	Largecraft are designed FTL. Largecraft are NOT designed to be carried by larger carrier craft as Subcraft. This class represents regular ships and overlaps with many other ship organizational categories. Largecraft mount jump drives. If they lack jump drives, they are called bigcraft.
4.	Adventure Class Ships (ACS)	100 to 2,499 tons	Ship or Vessel	Common	Adventure Class ships may be FTL or NAFAL. They are typically designed FTL and service many lesser roles including customs, planetary defense, tramp freighters, etc. This class represents Merchants, Escorts, etc.
5.	Battle Class Ships (BCS)	2,500 to 249,999 tons	Ship or Vessel	Uncommon	Battle Class ships may be FTL or NAFAL. Such ships require major investment and only service major roles including megacorporate interstellar trade, warships of capital class, and major endeavors. This class represents Cruisers, Bulk Traders, Battleships, etc.
6.	Fleet Class Ships (FCS)	250,000 to 999,999 tons	Ship or Vessel	Rare	Fleet Class ships may be FTL or NAFAL. Such ships are tremendously expensive and represent polity-level investment in RU's. This class represents Super Dreadnoughts, Superweapons, large Sleeper Ships, large Generation Ships, etc. These vessels are also known as Capital Ships.
7.	World Class Ships (WCS)	1,000,000 tons or larger	Ship or Vessel	Ultra-rare	World Class ships may be FTL or NAFAL. Such ships are beyond expensive and represent suprapolity-level investment in many RU's. They take many years to build under ordinary circumstances. This class represents immense World-Ships, very large Super Dreadnoughts, Superweapons, etc.

History & Background (Dossier)

The rise of size-based ship terminology came from the unique properties of the conventional jump drive in Charted Space. Jump Drives from TL-10 to TL-15 require a minimum mass of 100.0 tons or larger. Proper jump bubbles and fields cannot be created with less mass displacement. Some day, someone will miniaturize the technology and be able to create a jump transition bubble at any mass displacement, but the peculiarities of the contemporary technology preclude smaller craft. This greatly affects naval architecture.

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 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.

• Traveller Wiki Editorial Team
• Author & Contributor: Lord (Marquis) and Master of Sophontology Maksim-Smelchak of the Ministry of Science