Which kettle?

[Minerva]

We have one like this:
Fuel — MCS Boat Products

Cheap, fits on fiddles well, spout opens with flick of thumb and stays there, lid easy to remove to fill, but can also fill by spout.

Do you find diesel in your tea adds a certain something?

 

[Refueler]

Local caravan dealer .... loads to choose from ... and often the guys there are caravan users themselves so can advise what is better.

You can actually 'tune' a kettle whistle by carefully altering the metal 'lips' that create the sound ...

 

[Porthandbuoy]

Don't buy an overly expensive one. Despite the use of fiddles, kettles do have a habit of falling off the cooker, usually when empty.
Make sure, if it's a whistler, that the whistle has a plastic knob so you don't burn your fingers taking it off to pour.

 

[Refueler]

If the Plastic knob gets lots or ruined ... a champagne cork provides an excellent replacement !