Britain's entire fleet of Astute-class attack submarines is currently out of service, with all five vessels undergoing maintenance and repair work, according to reports.

The Astute-class submarines represent the Royal Navy's primary attack submarine capability, designed for anti-submarine warfare and intelligence gathering operations. The vessels are considered critical components of Britain's naval defense infrastructure.

The maintenance situation comes amid ongoing discussions about defense capabilities and readiness. Defense officials have previously highlighted various challenges facing Britain's Armed Forces, including equipment maintenance schedules and operational demands.

The Royal Navy has not provided specific details about the duration of the maintenance work or expected return-to-service dates for the submarines. Military maintenance schedules typically involve both routine servicing and more extensive overhaul periods that can extend for several months.

The Astute-class program has faced various technical and scheduling challenges since its inception, with the submarines requiring complex maintenance procedures due to their advanced nuclear propulsion systems and sophisticated electronic equipment.