This is an ingenious, scathingly ironic, highly critical allegory about conditions today in Iran, written by the director, Mohammad Rasoulof. Nearly the entire drama takes place on an old, disabled oil tanker that is very slowly sinking into the sea. The ship is crammed with people of all ages and varying life stations, though there does not appear to be anyone on board who's rich.

There are also animals, people tending vegetable gardens, a cleverly rigged cell phone service. Everyone is put to work, has a role to play. A wheelchair bound young man with cerebral palsy manages the rickety lift that transports people and goods up and down to the water line. A youngster ("Baby Fish") picks up small fish trapped below decks and returns them to the sea.

The enterprise is run – better, micromanaged - with an iron hand by Captain Nemat (Ali Nassirian). He's everywhere: checking out every worker on the job, greeting newcomers and settling them in, brokering marriage contracts, tending to the needs of the ill and impoverished, ordering tools and goods from the mainland on his cell (he's the only one aboard with a personal phone), dickering with the ship's owners, who want to evacuate everyone and sell the old hulk to a scrapper.

Unbeknownst to them, a major source of income for this floating colony is torching away pieces of the vessel and selling them to a scrapper. The costs of goods like purchased food and medicines is deducted from people's pay, like a company store operates.

There is a school aboard ship, run by an enlightened, middle aged teacher who is keenly resourceful. For example, he makes his own blackboard chalk sticks using old bullet casings for molds, a marvelous spin of the traditional image of turning swords into ploughshares. This school is no madrasa: he teaches natural science and the 3 R's to a coed lot of kids of all ages (a family arrives with three teen daughters, none of whom has ever been to school, the teacher quickly learns).

Capt. Nemat is not happy about this school or its teacher's ways. He bickers with the teacher about the latter's measurements that demonstrate how rapidly the ship is sinking: at the rate he estimates, it will only stay afloat for a few more years. Nemat dismisses this as a spurious finding. He finds any pretext to interrupt classes. One day it's a ship-wide celebration. Another day it's a need for the kids to aid in a special work project. Still later Nemat insists that two donkeys must be housed in the classroom.

Nemat also insists that women wear burkas, and have traditionally arranged marriages. He metes out harsh punishment to those who transgress the rules, like young Ahmad, who keeps hitting on a girl Nemat deems too good for him, and who later tries to escape the ship. In an act of obvious defiance, the teacher, displaced by the donkeys, draws a chalk face: a woman without a burka.

A major breakthrough occurs: workers are finally able to tap into the oil reserves tanked below decks. Oil in partly filled drums is floated to land and sold. But even with that development, Capt. Nemat cannot fend off the evacuation demands of the ship's owners. So he forces everyone to grant him their powers of attorney in order to wheel and deal on their behalf as he chooses. His choice is to have everyone leave the ship, but not in order to end their isolation.

Quite to the contrary, Nemat directs his people to establish a new home, far removed from civilization, on a bleak patch of desert. They will start over, from scratch. The metaphor for a logical conclusion to radical Muslim fundamentalism could not be more clear.

Subject to the usual caveat that everybody shouts at the top their lungs, even when standing nose to nose, a style that is common and annoying in Iranian film dialogue, this is a sensational film, and one can only marvel that it was made in the first place, let alone exported to the West. My grade: B+ 8/10.

I saw this film at the 2005 Toronto International Film Festival.

Iron Island is the second feature film from Iranian director Mohammad Rasoulof, who also wrote the screenplay. Iron Island refers to an old, abandoned oil tanker floating in the Persian Gulf, populated with all sorts of people and presided over by Captain Nemat (Ali Nasirian). The ship is a miniature city, with its own school and barter economy, and Nemat is constantly running about, seeing to the needs of the people under his protection, while at the same time overseeing the gradual disassembly of the ship for scrap metal.

The ship contains a whole coterie of characters, including the young man Nemat adopted who is in love with a girl betrothed to another man; the old man who is constantly looking out into the distance for who-knows-what; the young boy who is trying to rescue fish from the hold and return them to the ocean; the teacher who insists the boat is slowly sinking. Under threat from the authorities to abandon the ship, Nemat must decide what to do to keep his little city together.

The film was enjoyable, and it was fascinating to watch the society that Nemat had built up on his own little floating island. The characters were absorbing to watch, especially Nemat, who seemed to be partially motivated out of love for his charges, and partly because he wouldn't know what to do with himself if he wasn't leading the people.

Director Mohammad Rasoulof attended the screening and did a Q&A: - The film is about the isolation and loneliness of a society, but one that still has a beautiful life.

• The story is purely fictional.

• Nemat disconnects the people from the outside world from the moment they arrive, resulting in the people willing to follow or do whatever the captain wants. When a society is completely cut off from the outside, whatever is left rules you.

• The film has not yet screened in Iran; they are currently waiting permission that has been promised to them.

• Every film, poetic or not, goes back to the filmmaker and what they want to say; and this film is what Rasoulof wants to say.

• Any artistic work has many different layers, with the plot/story being the one on top. The same thing happens in different places, not just one society. The film is not a metaphor for Iran in particular.

• The script was originally written as a theatre piece 10 years ago. Rasoulof rewrote it two years ago, and put the ship as a character in it.

• The cast and crew of about 350 had to commute 10 km a day to the ship.

• The people in the area where filming took place are very religious and were uncomfortable with the idea of being in a film, so Rasoulof had to go to an area about 60 km away, where many of the people had emigrated from elsewhere, for his cast.

• Ali Nasirian, who plays Captain Nemat, is a renowned actor in Iran, and did a lot for the film.

• Each one of the characters in the film is based on someone Rasoulof knows. The little fish boy is based on his own childhood and that of his brother. The man watching the horizon is someone Rasoulof remembers from growing up. The teacher is someone he knows well.

• The idea for the ship just came to Rasoulof, and he wasn't sure how. He just said there are times one is inspired by such ideas.

• There is one scene when the older boys are watching satellite TV. The TV was originally supposed to be playing Titanic, starring Leonardo DiCaprio, but they couldn't get the copyright to do so.

• On the issue of censorship, Rasoulof said he basically made the movie he wanted to, and let the censors excise what they wanted.