>o?Agreed. Why haven't they used the look-down radars on Sats to complete the mapping of this area - Or at least all areas where subs and other Defense assets usually operate. I mean, jeeesh, they've been using this type of radar to map virtually every other part of the world, from Rain Forests to Egyptian ruins
Rain Forests and Egyptian ruins aren't underwater.
You can't really do precise detailed ocean floor mapping from satellite; as the article notes, to really do it right you need a survey ship and that takes forever.