How much royal navy pension after 12 years?

The amount of Royal Navy pension after 12 years of service can vary significantly based on factors such as rank, length of service, and the specific pension scheme in place at the time of service. Generally, the Armed Forces Pension Scheme provides a pension based on a calculation of service length and final salary. For a precise figure, it's best to consult the official sources or a pension advisor familiar with military pensions.