What is a 'Scotch Boiler'? I thought scotch boilers were fire-tube, but I just saw a diagram on here that seems to imply a water-tube design. What gives? - Quora
![Boilermakers Union on Twitter: "Boilermakers built these scotch marine boilers during WWI. #ThrowbackThursday #BoilermakersUnion https://t.co/naIYHPxTNV" / Twitter Boilermakers Union on Twitter: "Boilermakers built these scotch marine boilers during WWI. #ThrowbackThursday #BoilermakersUnion https://t.co/naIYHPxTNV" / Twitter](https://pbs.twimg.com/media/DhW1bC1UEAArH-M.jpg)
Boilermakers Union on Twitter: "Boilermakers built these scotch marine boilers during WWI. #ThrowbackThursday #BoilermakersUnion https://t.co/naIYHPxTNV" / Twitter
![What Is Scotch Marine Boiler? | Types of Scotch Marine Boiler | Parts of Scotch Marine Boiler | Working of Scotch Marine Boiler What Is Scotch Marine Boiler? | Types of Scotch Marine Boiler | Parts of Scotch Marine Boiler | Working of Scotch Marine Boiler](https://mechanicaljungle.com/wp-content/uploads/2021/04/Types-of-Scotch-Marine-Boiler.jpg.webp)
What Is Scotch Marine Boiler? | Types of Scotch Marine Boiler | Parts of Scotch Marine Boiler | Working of Scotch Marine Boiler
![Scotch single ended return tube marine boiler (c. 1870). Model scale 1:12 in card by Sidney Poore | Science Museum Group Collection Scotch single ended return tube marine boiler (c. 1870). Model scale 1:12 in card by Sidney Poore | Science Museum Group Collection](https://coimages.sciencemuseumgroup.org.uk/images/396/782/medium_SMG00182530.jpg)