As the previous owner, a marine engineer and donor of this textbook was based in Liverpool for some years it is possible that he may have studied for the Ministry of shipping exam at the former College of Marine Engineers, Liverpool in the early - mid 20th C. Mariner Duncan had a particular regard for the Mission to Seafarers. A plate for display on a commissioned new table at the MTSV chapel acknowledges his bequest and the material donated. Collectively the G W Duncan material includes: photographs, professional data memorabilia and written and commercially printed resources. The memorabilia relates to his career at sea and in particular the role of an engineer, including a handwritten manual of notes and references relating to the mechanical and engineering aspects and areas of responsibility for maintenance. Text book with dull grey brown cover with black printing and simple line border.See image attachedmarine engineer training, engineers, mathematics, ministry of shipping, liverpool, exams, mariners, george winfield duncan (1922-2017), ship engineer, s.s. athenic