Worth catching if you can, IMO. Sometimes funny, but ultimately moving drama inspired by the Russian submarine disaster. The audience can perch on, wander around or lean over-looking the set as the action proceeds. No comfy seats, the claustrophic feeling is intentional, and there's no interval in one and a half hours, but time flies. On till 27th June. If you want a relatively unobstructed view of most bits of the action, it's probably best to stay in the gallery.