Brandish a gunâIn England, bank robbers who threatened employees and customers with a gun stole, on average, about $16,000 more than robbers who were unarmed. Of course, showing off a gun raises the risks as wellâarmed robbery almost always comes with a minimum jail sentence and makes things more dangerous.
Dive Support Vessels.  Dive support vessels or diving support vessels are ships used in professional diving projects as a floating base. Diving systems are considered can compete for valuable deck space in oil and gas production platforms. It is far more practical to use mobile floating dive support vessels.
Diving equipment is equipment used by underwater divers to make diving activities possible, easier, safer and/or more comfortable. This may be equipment primarily intended for this purpose, or equipment intended for other purposes which is found to be suitable for diving use. Rebreather, closed-circuit or semi-closed-circuit scuba. 2  Free diving or breathhold diving, where the diver completes the dive on a single breath of air taken at the surface before the dive. 3  Snorkel allows breathing at the surface with the face submerged, and is used as an adjunct to free diving and scuba.