The Solo Sailor (1987)

Christine inherits a sailboat from her father, whom she barely knew. Christine is a divorced single mother and her job at a research insitute leaves her with too much work and too little time to sail. She can't find anyone to buy the boat at full value, so she tries to repair it over the winter in the hopes of being able to get a better price in the spring. Working on the boat become something of an obsession to the detriment of Christine's relationships with her son, boyfriend and collegues. When the boat is finally ready to sell, she isn't sure that she is willing to part with it after all.