Here you can find info about repairing inflatable boats:

http://www.allinflatables.com/support/repairs.html

Thanks bulldog for the advice this boat was at an auction but i did not get it it went up to £30 and with not knowing much about them i did not want to risk paying more there was two leaks on the front upper seams and also a rip about 3/4"L shape on the outer bottom on close inspection when i went back on the night off the auction i noticed there was two valves on the sides one on the inside one on the outside which told me there was an inner safety tube which was also burts so i said leave well alone but thank you anyway i am 68 and i would not use it that often or i would have bought a new one.

thanks again charlie

Thank you