Those achieving the highest scores will now be tested half as often (Picture: Royal Navy).
Personnel achieving 'very good' or 'excellent' pass marks in their next annual Royal Navy fitness test will then not be required to complete the tests again for two years.
Twenty-four-month fitness competency will be granted to serving members who achieve the top two scores across the strength and cardiovascular tests, rather than being tested yearly.
Royal Navy personnel have previously completed the tests every year, graded in relation to their age and gender.
There will be no change in procedure for those obtaining a 'pass', 'good' or 'fail' grade band overall.
The Navy says it is adopting the new system to "provide an incentive to do better that will ultimately lead to higher standards".
The First Sea Lord, Admiral Tony Radakin, recently shared a photo on social media showing him completing his fitness test.
This annual routine test for serving members closely resembles the Pre-Royal Navy Course (PRNC), undertaken by potential Navy recruits.
The PRNC features team and solo runs alongside bodyweight gym tests and a variety of water-based assessments.
A Royal Navy source told Forces News that, while the new 24-month policy will be monitored, it mirrors RAF procedures and "provides great incentive for serving members to go above and beyond the required standards".
"Attaining a score of very good or excellent in the Royal Navy Fitness Test demonstrates that a routine of regular, disciplined exercise is already in place," the Navy source continued, about the reasoning behind the two-year timeframe between tests
"The Navy would regard these as low-risk personnel with regards to falling below the required standard.
"This will provide an incentive to do better that will ultimately lead to higher standards."