EXHIBIT 15


                              Acknowledgment Letter


To the Stockholders and Board of Directors
NAC Re Corporation


We are aware of the incorporation by reference in the Registration Statements
(Form S-8 No. 33-25585, Form S-8 No. 33-77494 and Form S-8 No. 333-33873)
pertaining to the NAC Re Corp. Employee Stock Purchase Plan, in the Registration
Statement (Form S-8 No. 33-27745) pertaining to the NAC Re Corp. 1989 Stock
Option Plan, in the Registration Statement (Form S-8 No. 33-7813) pertaining to
the NAC Re Corp. 1985 and 1986 Stock Option Plans, in the Registration
Statements (Form S-8 No. 33-22841 and Form S-8 No. 333-03935) pertaining to the
NAC Re Corp. Employee Savings Plan, in the Registration Statement (Form S-8 No.
33-34516) pertaining to the NAC Re Corp. Director's Stock Option Plan, in the
Registration Statement (Form S-8 No. 33-77492) pertaining to the NAC Re Corp.
Director's Stock Option Plan, and in the Registration Statement (Form S-8 No.
33-77114) pertaining to the NAC Re Corp. 1993 Stock Option Plan, in the
Registration Statement (Form S-8 No. 333-33875) pertaining to the NAC Re Corp.
1997 Incentive and Capital Accumulation Plan, of our report dated April 21,
1998, relating to the unaudited consolidated interim financial statements of NAC
Re Corporation that is included in its Form 10-Q for the quarter ended March 31,
1998.


                                         ERNST & YOUNG LLP


New York, New York
April 21, 1998