Katrina Day (nee Sajaia) has previously published poetry and an allegoric story, The Silver Bullet: Tour of the Universe. She was born in Tbilisi, Georgia, to Gregory (Grigol) Sajaia, editor-in-chief of the scientific/educational magazine School and Life; and Isabella (Elisashvili), a journalist. Having graduated with a degree in languages she has travelled and is now settled in the UK with her husband. Blue Boat on the Beach is based on her experiences and observations of the people she met when she first travelled to Central America and Canada. Her move to Costa Rica made a lasting impression, even though at the time she was not aware of this. Although she constructed her book based on fictional characters, there is a true likeness with regards to her surroundings then. Katrina Day lives and works in Berkshire.