The Jicco was a line of assault boat mass produced by the Principality of Zeon.
History
Before the Principality of Zeon started using mobile suits, it relied on more conventional spacecraft. The Jicco-class assault boat was smaller and hence more manoeuvrable than capital ships.
The Jicco-class assault boat was an important part of each Zeon fleet, especially before the advent of mobile suit warfare. Armed with just missiles, its sole purpose was to take out enemy space ships. They provided fleet with a means to turn the tide of battle by crippling or destroying larger enemy ships.

Jicco-class assault boat from Mobile Suit Variations
Design
The Jiccooc-lass assault boat’s bridge sat above its missile launcher module, linked by an arch to each of its two sets of thrusters. Three fuel storage spheres sat between its the thruster modules.

Jicco-class assault boat from Gihren’s Greed
Armaments
The assault boat had a missile launcher as its sole weapon.
Missile launcher
A seven-tube missile launcher was built into the bow of the Jicco. This carried missiles capable of taking out smaller enemy ships and crippling larger ones.
Behind the scenes
Kunio Okawara was the original mechanical designer.