On Anton Steam engines, yes they're lovely things, but have you seen the prices? If you phone Westbourne for a price, make sure you're sitting down when they break the news to you.
The Anton unit is vaguely similar to the old Cheddar Gemini, which wasn't cheap either of course, but there are more economical alternatives. ACS in Scotland is producing a pair of twin-cylinder oscillators that are very similar in size and output to the old Cheddar Puffin and Plover, and every bit as well made as the Cheddar units were. Either of the ACS steam plants would be a perfect combination with Slipway's Envoy tug, and the good news is that even the larger unit is less than half the current cost of an Anton. Maybe I should point out that I have no connection with any of the manufacturers mentioned.
www.acs-engineering.co.uk