I thought it meant the seat wasnt suitable for use on a submarine...

Bugger, DD1 will be upset if that is the case. She saw the ads for that show that was on recently with the sub and asked to go on one.

Thanks BooBoo, makes sense now. I am in NSW. The seat she is in is one of the seats that you can use from 6months to 8 years but she is already at the top harness slot in it, she is tall for her age.

Feebs. Can any seat use a H harness? The two I like don't mention anything about using one of them on it. Totally unrelated. What is today the day for?