Naval Historywith Dr. Alex

Q&A · 36:54-37:48

Why the Royal Navy prioritizes SSNs over SSKs

A mixed submarine fleet can offer local utility, but a cheaper conventional boat should not displace the nuclear attack boat's wider role.

Force StructureRoyal NavySskSSNSubmarines
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Question

Should the Royal Navy operate non-nuclear submarines alongside SSNs?

Short answer

Some could help with local duties and training, but SSNs remain the more versatile priority for the main attack-submarine role.

Notes

Some non-nuclear submarines could be retained for home waters and training. A cheaper SSK can look interchangeable with an SSN in a budget comparison even though their capabilities differ. The rough shorthand here makes an SSN a 65 percent solution for SSK duties, while an SSK supplies only about 40 percent of the SSN's wider role. A mixed fleet is useful only if conventional boats do not replace the nuclear force required for global attack-submarine work. If the service must choose one type, the SSN takes priority.