Sensor/Stealth Test

Sensor/Stealth interaction test

A sensor sweep is rolled at D10 + sensor power, rerolling and adding all 10s. Normally a sensor sweep rolls 1 dice at Long range, one additional at Medium and a third at Close. All targets with a stealth rating below the roll(s) must make a saving throw for each detection success made.

If the save is successful, the sweep has detected a 'contact' which can be further followed; if the save is failed there is sufficient accuracy on the sensor solution to enable weapons fire, though the target's Evasion may recieve a bonus.

The following are the default sensors that is free on all ships, ranked 1-5.

+0 Telescopes and Lookouts
Sensor Power: +0
Sensor Ranges: 5/10/20
Doubles all Star Way effects.

+0 Simple Magnetic Sensor Array
Sensor Power: +2
Sensor Ranges: 8/15/30

+0 Simple Search Radar
Sensor Power: +3
Sensor Ranges: 10/20/40

+0 Simple Gravitometer
Sensor Power: +4
Sensor Ranges: 12/25/50

+0 Simple Omnisensor
Sensor Power: +5
Sensor Ranges: 15/30/60

Permutations

High-frequency sensors; high sensor power but small medium/long ranges.
Low-frequency sensors; moderate sensor power with extended long ranges.
Towed sensor arrays; disabled if ship is forced to make an evasion roll.
Wake detectors; bonus for being in star ways.