The Unsinkable Class of 1970

                                             A-Be                        Be Br                Br-Es                     Fe-Gr                        Gr-Hi                  Hr-Li

                                                                Lu-Mc                 Mc-Mu                 Mu-Pi                    Po-Ro                 Sa-Si

                                                                                      Sc-Sz                         Sz-Wa                             We-Z