Navigation
Name
Navigation
Skill Attribute & Difficulty
Int - Average
Defaults
Special
Prerequisites
None
Description
This is the ability to find your position through careful observation of your surroundings and the use of instrumentation. A successful roll tells you where you are or lets you plot a course.
You must specialize:
Specializations
Sea
Defaults: Astronomy-5, Crewman (Seamanship)-5
Navigation by the stars and ocean currents.
Modifiers: +3 if you have a high-tech global positiong system or inertial compass; -5 (and no use of astronomy default) if you lack high-tech aids, the weather is bad, and the stars are hidden
Air
Defaults: Astronomy-5
Navigation by the stars and by the terrain below.
Modifiers are as for Navigation (Sea)
Land
Defaults: 5+int, Cartography-4, Mathematics (Surveying)-4
Navigation using landmarks and the stars; also called "Orienteering"
Modifiers: +3 if you have a high-tech substitute
Space
Defaults: Astronomy-4, Mathematics (Applied)-4
Navigating through ordinary interplanetary and interspellar space, usually at less than the speed of light
Hyperspace
Defaults: Astronomy-4, Mathematics (Applied)-4
Also called "Astrogation." Similar to Navigation (Space), but used when traveling through "Jump-Space" or "Hyperspace."
Air, Land, and Sea default to one another at -2. Space and Hyperspace default to one another at -5. There are no defaults between these two groupings.
Modifiers
-1 to -10 for being in an unfamiliar area (GM's discretion, but an unfamiliar world, star system, etc. Should give at least -5 Equipment Modifiers