Relay based system to launch a projectile

A relay system for launching a projectile, comprising:

• an electromagnetic rail gun;
• a helium gas floating platform with a projectile catcher, wherein the projectile catcher comprises a stopper net between arms of the projectile catcher, and wherein the projectile catcher is configured to catch the projectile from the electromagnetic rail gun using the stopper net;
• the helium gas floating platform comprising a pathway for retaining a projectile therein, wherein the pathway is made of non-conductive material;
• and
• a plurality of conductive coils embedded in the pathway, wherein the conductive coils are operable to be electrically connected to a power supply, such that the power supply provides an electric current to the conductive coils creating an electromagnetic field along the pathway for accelerating the projectile within the pathway.