The books were : Warship -LRB- published in NUMBER@1 -RRB- HMS Hero -LRB- published in NUMBER@2 -RRB- Holt RN -LRB- published in NUMBER@3 -RRB- Board game Series creator PERSON@1 also devised a version of the board game Battleships , based on his experience of modern naval tactics and called Warship after the series .

The books were : Warship -LRB- published in NUMBER@1 -RRB- ; HMS Hero -LRB- published in NUMBER@2 -RRB- ; and PERSON@2 RN -LRB- published in NUMBER@3 -RRB- .
