What does Grapeshot do in AoE3?

Organ Gun: time between attacks (Cannon) −0.15, area of damage (Cannon) +0.5; Replaces Organ Gun into Organ Gun. The game says: "Improves Organ Gun rate of fire, area damage radius, and removes the packing animation."

Home City card

Grapeshot

Grapeshot (tech ID DEHCGrapeshot) is a Home City card in AoE3: Definitive Edition 100.19.18309, in the decks of 1 civilization, sent from the Industrial Age. Effect: Organ Gun: time between attacks (Cannon) −0.15, area of damage (Cannon) +0.5; Replaces Organ Gun into Organ Gun.

Quick answers (3)

Which civilizations have the Grapeshot card?: Portuguese.
What does Grapeshot do in AoE3?: Organ Gun: time between attacks (Cannon) −0.15, area of damage (Cannon) +0.5; Replaces Organ Gun into Organ Gun. The game says: "Improves Organ Gun rate of fire, area damage radius, and removes the packing animation."
What is the tech ID of Grapeshot?: DEHCGrapeshot.

Improves Organ Gun rate of fire, area damage radius, and removes the packing animation.

What it does

Organ Gun: time between attacks (Cannon) −0.15, area of damage (Cannon) +0.5
Replaces Organ Gun into Organ Gun(unit)

3 further effects (interface, visuals or AI) not listed.

Cost: 1
Sent from: IV
Times it can be sent: 1
Game ID: DEHCGrapeshot

In these decks

PortugueseIV×1

Source: techtreey.xml and the Home City files, AoE3: DE 100.19.18309 (build 25040513).