If the subversion repository in using a different port from the standard port 22, you can create a custom tunnel behavior. This will allow you to use svn+teemssh://user@host/repo/proj/trunk instead of the usual svn+ssh://... and use a different port.To do this, add the line in the [tunnels] section of your subversion config (~/.subversion/config):
teemssh = $TEEM_SSH ssh -p <port>
Here’s the link to the documentation.