GURPS - 4th Edition - Spaceships.pdf - GURPS - michal-signum

Written by DAVID L. PULVER Edited by JAKE STEINMANN

Illustrated by STEVE CROMPTON, GLEN GRANT,

MICHAEL GOODWIN, DENIS LOUBET, FRED RAWLES,

MICHAEL SURBROOK, and GEORGE “SPEED” WEBBER

An e23 Sourcebook for GURPS ®

STEVE JACKSON GAMES

Stock #37-0120

Version 1.0 – September 19, 2007

C ONTENTS

I NTRODUCTION . . . . . . . . . . 4

About GURPS . . . . . . . . . . . . . . . . . . 4

About The Series . . . . . . . . . . . . . . . . . 4

Publication History . . . . . . . . . . . . . . 4

About the Author . . . . . . . . . . . . . . . . 4

Scaling Statistics . . . . . . . . . . . . . . . . . 5

S PACECRAFT . . . . . . . . . . . . 5

S PACECRAFT S TATISTICS . . . . . . . . . . . . 5

E XAMPLES . . . . . . . . . . . . . . . . . . . . . . . . 6

Star Flower -class

Tramp Freighter . . . . . . . . . . . . . . 6

Midnight Sun -class

Orbital Shuttle . . . . . . . . . . . . . . . 7

D ESIGN . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

S PACECRAFT S YSTEMS . . . . 8

Scaling Up Spacecraft . . . . . . . . . . . . . 9

Spacecraft Hulls. . . . . . . . . . . . . . . . . 9

S YSTEM D ESCRIPTIONS . . . . . . . . . . . . . 9

Free Equipment . . . . . . . . . . . . . . . . 10

Additional Equipment . . . . . . . . . . . 10

Armor, Ice . . . . . . . . . . . . . . . . . . . . . 11

Armor, Stone . . . . . . . . . . . . . . . . . . 11

Armor, Steel . . . . . . . . . . . . . . . . . . . 11

Armor, Light Alloy . . . . . . . . . . . . . . 11

Armor, Metallic Laminate . . . . . . . . 12

Armor, Advanced Metallic

Laminate . . . . . . . . . . . . . . . . . . . 12

Armor, Nanocomposite . . . . . . . . . . 12

Armor, Organic. . . . . . . . . . . . . . . . . 12

Armor, Diamondoid. . . . . . . . . . . . . 13

Armor, Exotic Laminate . . . . . . . . . 13

Cargo Hold . . . . . . . . . . . . . . . . . . . . 13

Cloaking Device . . . . . . . . . . . . . . . . 13

Contragravity Lifter . . . . . . . . . . . . . 14

Control Room. . . . . . . . . . . . . . . . . . 14

Defensive ECM. . . . . . . . . . . . . . . . . 14

Engine Room . . . . . . . . . . . . . . . . . . 15

Enhanced, Multipurpose,

Science, and Tactical

Comm/Sensor Arrays . . . . . . . . . 15

External Clamp . . . . . . . . . . . . . . . . 15

Factory . . . . . . . . . . . . . . . . . . . . . . . 16

Force Screen. . . . . . . . . . . . . . . . . . . 16

Fuel Tank . . . . . . . . . . . . . . . . . . . . . 17

Habitat . . . . . . . . . . . . . . . . . . . . . . . 17

Hangar Bay. . . . . . . . . . . . . . . . . . . . 18

Specialized Rooms for Habitats . . . . 18

Jet Engine . . . . . . . . . . . . . . . . . . . . . 19

Jump Gate . . . . . . . . . . . . . . . . . . . . 19

Mining and Refinery . . . . . . . . . . . . 19

Open Space. . . . . . . . . . . . . . . . . . . . 19

GURPS System Design

❚

STEVE JACKSON

Managing Editor

❚

PHIL REED

Marketing Director

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PAUL CHAPMAN

GURPS Line Editor

❚

SEAN PUNCH

WILL SCHOONOVER

Production Artist

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Sales Manager

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ROSS JEPSON

THOMAS WEIGEL

Page Design

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ALEX FERNANDEZ

ANDY VETROMILE

GURPS FAQ MAINTAINER

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PHIL REED and

JUSTIN DE WITT

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PHIL REED and

WILL SCHOONOVER

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STÉPHANE THÉRIAULT

Lead Playtester: Jeff Wilson

Playtesters: Anthony Jackson, Charleson Mambo, Christopher R. Rice, David Scheidt, Douglas Cole, Frederick Brackin, Jake Steinmann, John W. Nowak, Jon Glenn,

Jon Walters, Jonathan Bennett, Karl Gallagher, Kyle Bresin, Nelson Cunnington, Paul Blankenship, Paul Chapman, Peter V. Dell'Orto, Robert Gilson,

Roger Burton West, Sam Young, Shawn A. Fisher, Thomas Gamble, Thomas Jones-Low, and Tim Ray.

GURPS , Warehouse 23, and the all-seeing pyramid are registered trademarks of Steve Jackson Games Incorporated. Pyramid , Spaceships , e23, and the names of all products

published by Steve Jackson Games Incorporated are registered trademarks or trademarks of Steve Jackson Games Incorporated, or used under license.

The scanning, uploading, and distribution of this material via the Internet or via any other means without the permission of the publisher is illegal,

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C ONTENTS

Art Director

Indexer

Errata Coordinator

Print Buyers

Passenger Seating . . . . . . . . . . . . . . 20

Power Plant, Chemical Energy . . . 20

Power Plant, Reactor. . . . . . . . . . . . 20

Ramscoop . . . . . . . . . . . . . . . . . . . . . 21

Reaction Engine, Chemical and

HEDM Rockets. . . . . . . . . . . . . . 21

Reaction Drive Engines . . . . . . . . . . 21

Reaction Engines, Electric . . . . . . . 22

Reaction Engine, Fission . . . . . . . . 22

Reaction Engine, Nuclear Pulse. . . 22

Reaction Engine, Fusion. . . . . . . . . 23

Reaction Engine, Total Conversion

and Antimatter . . . . . . . . . . . . . . 23

Reactionless Engines. . . . . . . . . . . . 24

Reconfigurable System . . . . . . . . . . 24

Robot Arm . . . . . . . . . . . . . . . . . . . . 24

Soft-Landing System . . . . . . . . . . . . 24

Solar Panel Array. . . . . . . . . . . . . . . 25

Space Sails . . . . . . . . . . . . . . . . . . . . 25

Stardrive Engine . . . . . . . . . . . . . . . 25

Stasis Web . . . . . . . . . . . . . . . . . . . . 26

Upper Stage . . . . . . . . . . . . . . . . . . . 26

Weapons, Major Battery . . . . . . . . . 26

Weapons, Medium Battery . . . . . . . 27

Weapons, Secondary Battery . . . . . 27

Weapons, Tertiary Battery . . . . . . . 27

Weapons, Spinal Battery. . . . . . . . . 28

Weapon Types. . . . . . . . . . . . . . . . . . 28

D ESIGN F EATURES . . . . . . . . . . . . . . . . 29

D ESIGN S WITCHES . . . . . . . . . . . . . . . . 31

Adapting Fictional Spaceships . . . . . 31

C REW . . . . . . . . . . . . . . . . . . . . . . . . . . . 33

F INALIZING THE S PACECRAFT . . . . . . . 34

Distance and Speed Units . . . . . . . . 36

S PACE T RAVEL . . . . . . . . . 36

M ANEUVER D RIVES . . . . . . . . . . . . . . . 36

Newtonian Space Flight

and Delta-V . . . . . . . . . . . . . . . . . 37

Travel with Reactionless Drives . . . 38

Continuous Acceleration

with Reaction Drives . . . . . . . . . . 38

Interplanetary Transfer Orbits . . . . . 38

Lightsails and Magsails . . . . . . . . . . 39

S TARDRIVES . . . . . . . . . . . . . . . . . . . . . . 40

Hyperdrive . . . . . . . . . . . . . . . . . . . . 40

Atmospheric Flight . . . . . . . . . . . . . . 40

Jump Drive . . . . . . . . . . . . . . . . . . . . 41

Warp Drive . . . . . . . . . . . . . . . . . . . . 41

S PACE O PERATIONS . . . . . . . . . . . . . . . 41

Access . . . . . . . . . . . . . . . . . . . . . . . . 41

Cargo Handling . . . . . . . . . . . . . . . . 44

Computers and Software . . . . . . . . 44

Comm/Sensor Arrays . . . . . . . . . . . 44

Detection . . . . . . . . . . . . . . . . . . . . . . 45

Overloading Life Support . . . . . . . . 46

Repair and Maintenance. . . . . . . . . 46

C ONSUMABLES . . . . . . . . . . . . . . . . . . . 46

Refueling. . . . . . . . . . . . . . . . . . . . . . 46

Food . . . . . . . . . . . . . . . . . . . . . . . . . 47

Ammunition . . . . . . . . . . . . . . . . . . . 47

Drop Capsules . . . . . . . . . . . . . . . . . 47

B ASIC S PACE C OMBAT . . . 48

T HE E NGAGEMENT . . . . . . . . . . . . . . . 48

S PACE C OMBAT T URNS . . . . . . . . . . . . 49

A CTION D URING A T URN . . . . . . . . . . . 50

Character Actions . . . . . . . . . . . . . . 50

When Not To Use These Rules . . . . . 50

Functional Systems and Control

Stations . . . . . . . . . . . . . . . . . . . . 51

Pre-Battle Turns . . . . . . . . . . . . . . . . 51

Space Movement . . . . . . . . . . . . . . . 54

Keeping it Simple:

NPC Crew Actions . . . . . . . . . . . . 54

Pilot Maneuvers . . . . . . . . . . . . . . . . 55

Range . . . . . . . . . . . . . . . . . . . . . . . . 57

Advantaged Status . . . . . . . . . . . . . . 57

W EAPONS F IRE . . . . . . . . . . . . . . . . . . . 57

Beam Fire . . . . . . . . . . . . . . . . . . . . . 58

Ballistic Attacks . . . . . . . . . . . . . . . . 59

Point Defense Attacks . . . . . . . . . . . . 59

Dodge . . . . . . . . . . . . . . . . . . . . . . . . 60

D AMAGE . . . . . . . . . . . . . . . . . . . . . . . . . 60

Beam Damage . . . . . . . . . . . . . . . . . 60

Ballistic Attack Damage . . . . . . . . . 60

Hull Damage and Hit Location . . . 61

A CTION A BOARD . . . . . . . . . . . . . . . . . . 63

Damage Control . . . . . . . . . . . . . . . . 64

Boarding . . . . . . . . . . . . . . . . . . . . . . 65

Launching Small Craft . . . . . . . . . . 65

S PECIAL R ULES . . . . . . . . . . . . . . . . . . . 65

Formations . . . . . . . . . . . . . . . . . . . . 65

Ground Fire . . . . . . . . . . . . . . . . . . . 65

Main Radiators in Combat . . . . . . . 65

Tractor Beams in Combat. . . . . . . . 66

Precision Attacks . . . . . . . . . . . . . . . 66

Targeting Exposed Systems . . . . . . 66

Weapons in Ordinary Combat . . . . . 66

W EAPON T ABLES . . . . . . . . . . . . . . . . . 67

Beam Weapon Tables . . . . . . . . . . . 67

Guns and Launchers Tables . . . . . . 68

I NDEX . . . . . . . . . . . . . . . 69

C ONTENTS

I NTRODUCTION

This book describes how spacecraft are designed and

explains what the systems built into them do. Several examples

of spacecraft from different tech levels are also provided, along

with rules for space flight and a basic space combat system.

Why a new system for describing spacecraft? GURPS has

had several spaceship creation systems, but they were intend-

ed for gamers who wanted to spend hours building a single

ship. If you enjoy that level of detail, GURPS Vehicle Design

System and GURPS Traveller: Interstellar Wars are recom-

mended. This system is more abstract, but it’s also faster. The

design rules are tightly integrated into the mechanics for space

combat, simplifying procedures for character actions, power

allocation, and hit location.

About The Series

GURPS Spaceships is the core book in the GURPS

Spaceships series, a series of 32-page volumes that will

supplement GURPS Space campaigns by providing

ready-to-use spacecraft descriptions and rules for

space travel, combat, and operations. The series will

include Traders, Liners, and Transports ; Warships

and Space Pirates; Fighters, Carriers, and Mecha;

Exploration and Colony Spacecraft; Mining and

Industrial Spacecraft; Strange and Alien Spacecraft ;

and Sentient Spacecraft.

Each volume provides spacecraft descriptions and

supplementary rules. For example, trade and passen-

gers are covered in Traders, Liners, and Transports,

and hex-grid combat is covered in Warships and

Space Pirates.

P UBLICATION H ISTORY

GURPS Spaceships includes revised and expanded ver-

sions of the space travel rules that first appeared in GURPS

Space (by William Barton and Steve Jackson) and the ship

combat rules that David Pulver added to GURPS Space 3rd

Edition .

A BOUT THE A UTHOR

David L. Pulver is a freelance writer and game designer

based in Victoria, British Columbia. He is the co-author

of the GURPS Basic Set 4th Edition and author of

Transhuman Space and numerous other roleplaying games

and supplements.

About GURPS

Steve Jackson Games is committed to full support of

GURPS players. Our address is SJ Games, P.O. Box 18957,

Austin, TX 78760. Please include a self-addressed, stamped

envelope (SASE) any time you write us! We can also be

reached by e-mail: info@sjgames.com . Resources include:

Pyramid ( www.sjgames.com/pyramid ). Our online maga-

zine includes new GURPS rules and articles. It also covers the

d20 system , Ars Magica, BESM, Call of Cthulhu, and many

more top games – and other Steve Jackson Games releases like

Illuminati, Car Wars, Transhuman Space, and more. Pyramid

subscribers also get opportunities to playtest new GURPS books!

New supplements and adventures. GURPS continues to

grow, and we’ll be happy to let you know what’s new. For a cur-

rent catalog, send us a legal-sized SASE, or just visit

www.warehouse23.com .

e23. Our e-publishing division offers GURPS adventures,

play aids, and support not available anywhere else! Just head

over to e23.sjgames.com .

Errata. Everyone makes mistakes, including us – but we do

our best to fix our errors. Up-to-date errata sheets for all

GURPS releases, including this book, are available on our

website – see below.

Internet. Visit us on the World Wide Web at

www.sjgames.com for errata, updates, Q&A, and much

more. To discuss GURPS with SJ Games staff and fellow

gamers, come to our forums at forums.sjgames.com .

You car find the GURPS Spaceships web page at

www.sjgames.com/gurps/books/spaceships .

Bibliographies. Many of our books have extensive bibliogra-

phies, and we’re putting them online – with links to let you buy

the books that interest you! Go to the book’s web page and look

for the “Bibliography” link.

Rules and statistics in this book are specifically for the

GURPS Basic Set, Fourth Edition. Page references that begin

with B refer to that book, not this one.

I NTRODUCTION

S PACECRAFT

In the vast cavern of Vehicle Assembly Bay Two, the great ship

was taking form. Her great alloy skeleton was surrounded by a

swarm of hundreds of technicians and robots that floated about

her, hard at work. Today they were installing the main engines:

the fusion torch for normal space travel, and the Ashtekar-Thorn

hyperdrive so she could leap between the stars. The habitats and

workshops for the 306 crewmembers would follow, cocooned in

a shell of hyperdense armor – all wrapped around the spinal par-

ticle cannon that gave the ship her dreadful purpose.

– Maya Bright, Inner Systems Gazette , 2434 A.D.

S PACECRAFT S TATISTICS

Spacecraft detailed in the GURPS Spaceships line use a

common format for statistics. The description begins with the

ship’s name and TL. This is followed by a description of the

spacecraft’s intended mission, how it may be used, the space-

craft’s hull type, systems, design features, crew, and statistics.

Throughout these rules, the terms “spacecraft” and “vessel”

are used interchangeably.

Scaling Statistics

To improve playability, some statistics in spacecraft

description have been scaled differently from those in

the GURPS Basic Set .

sACC: The space Accuracy statistic combines the

weapon’s Acc bonus, the range penalty for firing at typ-

ical ranges, and a bonus for aimed fire over several

turns with the aid of active targeting systems and tar-

geting programs.

Acceleration: This is always measured in gravities,

abbreviated G. To convert to a Move in yards per sec-

ond per second, multiply it by 10.

Delta-V: This “top speed” is measured in miles per

second, abbreviated mps. To convert to a Top Speed in

yards per second, multiply by 1,800.

d-Damage: This is decade-scale damage, i.e., 1 point

is 10 points of damage. For an explanation of decade-

scale see Scaling Damage (p. B470).

dDR: Space-scale DR is decade-scale damage

resistance.

dST/HP: Spaceship ST/HP values are also decade-

scale.

Hull and Systems

Spacecraft hulls are rated in terms of their mass in short

tons (2,000 lbs. per ton), their Size Modifier, and their longest

dimension. A hull is further defined as either streamlined (an

aerodynamic shape) or unstreamlined .

Spacecraft hulls are divided into three sections: the front

hull , the central hull , and the rear hull . Each represents one-

third of the spacecraft’s total mass (not volume). This need not

be taken too literally: the actual shape may be more complex,

e.g., “the front hull section” could include forward-facing parts

of the vessel that are actually part of multiple different sub-

hulls, pods, or wings.

The front, center, and rear hulls each contain six hull sys-

tems numbered [1] to [6]. In addition, two of the three hull

sections contain deep-buried systems designated [core]. Each

system is a major component. The numbers are used for hit

location rolls (see p. 61), while the core systems are similar to

the vitals location of a human. Each spacecraft has 20 sys-

tems , each 5% of the total mass.

S PACECRAFT

C HAPTER O NE

GURPS - 4th Edition - Spaceships.pdf

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