Shore Siege!

User Summary You are shipwrecked on a far away, hostile island! Monsters are approaching! Protect your ship from the onslaught of enemies until you can get it repaired. Monsters cause damage to your ship if you allow them to reach it. Use the weapons you find lying around and stop them before they can cause damage. You can buy various nifty upgrades in between levels. Can you make it off the island without being overwhelmed?