holding faith and a good conscience; which some having thrust away made a shipwreck concerning the faith;
While true enough that Paul did survive four shipwrecks, the fact is that shipwrecks are usually fatal to some and frequently to all who may be aboard; and there is certainly nothing in the passage that denies shipwrecks as equivalent to "spiritual death" in a passage like this.  To be sure, this does not deny hope to any who might DESIRE to recover themselves out of the snare of the evil one.  See under  2 Timothy 2:24f.