dreaming of ships and aeroplanes???

Vehicle - usually symbolizes our passage through the journey of life. The way that you travel through your life's journey, and your effectiveness in controlling your life.
The type of vehicle will give indications of the type of experience being related in the dream message. For instance, an ambulance will indicate a need for healing in the giving and receiving of experience, a police car will signify the need for discipline in experiences, an old car might suggest old habits, or 'things the way they used to be' or the need to change the old way of doing things...etc.

Airplane - escaping from daily routines, freedom, searching for higher consciousness, spiritual awakening, to rise above. It may be you are looking to go beyond your capabilities. But it also could indicate new goals are what you need.

Boat/Ship - a symbol of a part of your personality which you need in order to move ahead in the ocean of life. The boat in your dream could represent you and the manner you navigate through your emotions. It could symbolize the voyage of your life, an adventure and exploration of your unconscious, or a connection to the people in your dream by pointing out something that all of you have in common ("in the same boat").
The water under the boat also symbolizes a shaky ground, and the physical condition of the boat will depict what your actual situation is.
Water - represents your subconscious, your emotions, and your accumulated life experiences, and the flow of 'feeling' energy. It is also a symbol of new life, refreshment, vigor, energy, cleansing, emotional stirrings, fertility, growth, and creative potential.

Struggle - represents a struggle you are having in your waking life.

Island - could represent a need for peaceful solitude, or the feeling of being isolated, and separated from others. Being that it is surrounded by water (which represents emotion), it could suggests that you feel surrounded by too much emotion or 'drama'.

Killing:
Being killed - represents an interior or exterior influence that you feel is 'killing'(undermining, making ineffective, strangling, choking, stifling, etc) your self-confidence, or sense of identity.
Killing someone/something - repressing or stopping some aspect of yourself (whatever/whoever you killed represents within yourself). Also, expressing violence in a dream by killing someone, or something, may indicate that you are extremely angry in waking life: angry with yourself or with another person or the society, in general...or whatever the thing you killed represents. This dream comes as a relief of your bad emotions and repressed negative feelings and it contributes to your ability to remain in control.
Something/someone trying to kill you - suggests that you feel you are 'under attack' (emotionally, psychologically,or physically) within your waking life.

Chased - In this dreams like this, you are usually being chased by some villains, monsters, or unknown people who wish to harm you. But often these pursuers represent current tensions, or issues. This dream usually shows the level of stress you have at the moment, and is a signal to take control over the worries and resolve issues with a clear head.
Alternately, you might be trying to avoid something. Identifying what, or who, the chaser represents might clarify what you're trying to avoid. If the person or thing chasing you is identifiable as a part of yourself, the dream might involve a fear from within, such as an unhealthy relationship or unhealthy behavior.

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Is there a lot emotional stress in your waking life?
Do you feel the need to 'get away' from it all?
Do you feel the need to 'rise above', to be a better person?
Do you feel as though people 'attack' your ideas, or belittle the goals you have?
Is there someone, or something, you're avoiding?

Hope this helps a little, good luck!