On the other hand, standard, or open pollinated varieties are more or less stabilized in their characteristics. They remain fairly consistent, producing seed that will grow into plants more or less like their parent plants, though less uniform than hybrids.
The rank of admiral (or full admiral, or four-star admiral) is the highest rank normally achievable in the U.S. Navy. It ranks above vice admiral (three-star admiral) and below fleet admiral (five-star admiral). There have been 262 four-star admirals in the history of the U.S. Navy. Of these, 221 achieved that rank while on active duty, 40 were promoted upon retirement in recognition of combat citations, and one was promoted posthumously.
The US Navy has the 5th most navy ships in the world. China is in 1st place with 1000+ navy ships with the most destroyers and a nuclear aircraft carrier. There is no question the US navy is the mightiest seaborne force on Earth and I say this as an Englishman. I love my country but we are living in the past .