Why is submarine not made into commercial transportation for tourism and traveling.

Too slow and too uncomfortable.

When you look at the cost to construct and operate a submarine, then weigh in how few passengers it could carry, it wouldn't be very cost effective. Traveling by water is slow and inefficient. Why do you think cruise ships charge a couple of thousand per person for a five day ride?

Very boring, cramped, no windows and if one of the crew has body odour........phew :o(

What would the advantage be by traveling by sub other than novelty? You're not going faster than a jet, You don't have the scenery of a ship, car or train, and as previously stated, cramped quarters. I've been on a sight seeing sub and until it got below 100 feet depth, we were taking serious rocking in the water from the high sea state. A sub by design is meant to be hydrodynamic. Being so, the sub is at the mercy of the sea state until it goes deep.

Probably because of the cramped accomodations and it isn't the fastest form of travel either. I'm sure there is a risk factor involved as well.

There are tourist submarines out there.
http://www.sentex.net/~sxing/sub/sub.htm gives a price list if you want to buy one!

Subs are not:

safe for the untrained

efficient

effective

economical

In Barbados and the US Virgin Islands, they have boats called "submarines" in which half of the boat is above water and the other half underwater. The underwater half has windows so tourists can view the marine life