Re: What is an L-drive
Rumour has it, it's a big headache and often a big regret.

Seriously tho' it was a 2 stroke outboard type powerhead mounted onto sort of a hybrid lower unit...half outboard half inboard/outboard.
The lower unit was sort a vertical drop down out of a horizontal type hidden transom that could pivot at it transom mount point.
I personally haven't had any experience with them. However they were short lived which makes them a parts sourcing issue. As well, they were not overly bullet proof which, when combined with parts availability issues, doesn't make them the best choice for powering a boat.
On the upside (perhaps because they were 2 stroke?) they are relatively quick out of the hole for their respective hp's compared to the same power i/o boats.

Anyhow, I'm no expert on these but that is my understanding of them.
BP