The Holland-class refers to a series of submarines developed by the Royal Netherlands Navy in the early 1900s. These submarines were among the first to be designed for modern naval warfare, featuring a streamlined shape and the ability to operate underwater for extended periods. The class was named after the first submarine, the Holland I, which was launched in 1900. The Holland-class submarines played a significant role in advancing submarine technology and tactics. They were primarily used for training and experimentation, helping to lay the groundwork for future submarine designs. Their development marked a pivotal moment in naval history, influencing submarine construction worldwide.