Tank 
To dream of a tank filled with water is an indication that you are pleased with your life and will soon experience prosperity and even greater happiness.
To see a war tank denotes your willingness to find protection at any cost; even if that protection is destructive itself. It may further indicate that you are expressing anger and pent-up feelings in a way that hurts those around you.
Tanker
A tanker in a dream represents danger and pent up violence. A tanker which explodes in a dream relieves anger that you have kept held back in your waking life.
Alternatively, a tanker may represent your perception of someone's anger with you.
Vat
To dream of a vat is an ominous symbol. The large tub is a representation of grief. It may also indicate that you will soon experience sorrow or infidelity.
Aquarium
To see an aquarium in your dream indicates that you are aware of certain feelings that you possess but haven't been able to deal with. This may include needs, wants, and fantasies related to sex. Alternately, it may imply that you are at a stagnant point in your life and are confused as to which path to follow. It may also suggest that you are overly stressed and need to slow down, take a deep breath, and try to focus.
Oxygen Mask
Wearing an oxygen mask in a dream indicates that you need protection from outside influence. You may be concerned that your environment is causing you pain.
Alternatively, an oxygen mask may symbolize a need for freedom. You need to get out of a stifling atmosphere and express yourself.
Hand Grenade
To dream of a hand grenade indicates that you may be about to give someone some information that you have been guarding. Although you may feel that it is right to say what you know, you might need to examine your motives and the consequences should you tell. To be holding the hand grenade symbolizes a personal desire for drama and the ability to achieve it, but at a high cost.
Water Carrier
The water carrier is a symbol of great bounty. A large fortune or true love is in your future. If you are carrying the water, you will soon rise above your station. Great reward will soon be yours.
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