mortar rafts..uses?

[plasticpanzers]

Since my Union timberclads can turn Reb cavalry into Mississippi fishfood quite easily I was wondering what the mortar rafts do. There is no mention in the rules about them. They historically were not wildly useful against forts.

[havi]

mortar rafts bombs the forts and entrenched troops!

[Captain_Orso]

Not exactly. They don't actually 'fire' as normal besieging artillery does. They add 1 to the siege die roll thus increasing the chances of the defender surrendering.

[havi]

Or just that what Orso said

[Rod Smart]

Not exactly. They don't actually 'fire' as normal besieging artillery does. They add 1 to the siege die roll thus increasing the chances of the defender surrendering.

??

How does a unit in a river region besiege a unit in a city?

[Captain_Orso]

Oh, sorry . You place the Mortar Raft adjacent to an already besieged city to add the modifier.

[plasticpanzers]

thanks!!