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So it says blast power is for “placed explosives” only, correct? So grenades do not have blast power? No roll for these?

So the seismic survey charge is placed, but says 3E. Do I roll for blast power for this?

A weapon that have 2E (for example) as damage uses your skill to determine its effect

You fire these as a normal ranged attack, but if you hit your target, all other characters in the same zone (PC and NPCs alike) suffer the same damage. <>.

A placed explosive doesn't use ranged attack instead you use Blast Power to determine its effect. So if you fire an Armat U1 Grenade Launcher (2E base damage), then everyone in the zone will suffer 2 damage (plus extra for any stunts you rolled as usual).

If you detonate a 6 Blast Power explosives, you roll 6 dice and everyone in the zone will suffer 2 damage (1/3 of Blast Power), plus extra for any stunts you rolled. This is not a skill roll however so the roll can't be pushed.

A Seismic Survey Charge is listed as a ranged weapon (it has range) so the idea is that you throw it.

Thank you!

Are there any stats for placing a seismic survey charge? To me that sounds like a place and run and blow it up kind of weapon….

You’re on the right track; the difference comes down to how it’s used. Grenades and the seismic survey charge are treated as ranged weapons when thrown, so you make a normal ranged attack roll and, on a hit, everyone in the same zone takes the listed “E” damage. Blast Power only applies to placed explosives, which don’t use an attack roll. Since the seismic charge has a range, it’s meant to be thrown by default, but if your group wants to treat it as a placed “set and detonate” charge, that would be a table ruling rather than the standard use.

You’re on the right track; the difference comes down to how it’s used. Grenades and the seismic survey charge are treated as ranged weapons when thrown, so you make a normal ranged attack roll and, on a hit, everyone in the same zone takes the listed “E” damage. Blast Power only applies to placed explosives, which don’t use an attack roll. Since the seismic charge has a range, it’s meant to be thrown by default, but if your group wants to treat it as a placed “set and detonate” charge, that would be a table ruling rather than the standard use.

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Hi everyone (UscssRookie, malignant11, Fenhorn). Fenhorn explained all of this very well. And I love malignant11's contribution; you should answer technical questions about the rules more often. You have a knack for it, and you're very welcome to do so.

Yes, in my book, seismic charges can be treated primarily as "ranged attack" launched with 3E damage (if the attack succeeds) to everyone in the area where the charge explodes... OR... consider seismic charges with a timer as "placed explosives" and use blast power instead of the attack (ranged attack) roll.

Arthur.