Kuwait, which hosts US forces, says its defence systems intercepted missiles and drones amid sirens across the country.
IRGC says it targeted a base used by US forces after US attacks on site near Bandar Abbas.
Convictions come amid an intensified crackdown by Bahraini authorities on individuals accused of having ties to Tehran.
The IRGC claims to maintain control over the Strait of Hormuz despite the US blockade on Iran's ports.
Kuwait arrests four men it accuses of being in Revolutionary Guard and conducting failed infiltration of Bubiyan Island.
US-Iran ceasefire holds as Tehran warns Washington against attacks on tankers and Israel kills 24 people in Lebanon.
The country's interior ministry said legal proceedings are under way against the 41 people arrested.
State TV releases a video of IRGC forces boarding and detaining the Barbados-flagged vessel, Ocean Koi.