(a) Vessels contracted for prior to March 1, 1968, must meet the following requirements:

(1) Except as specifically modified by this paragraph, the requirements of § 193.50-10 must be complied with insofar as the number and general type of equipment is concerned.

(2) Existing installations previously approved, but not meeting the applicable requirements of § 193.50-10, may be continued in service so long as they are maintained in good condition to the satisfaction of the Officer in Charge, Marine Inspection, and they are in general agreement with the degree of safety prescribed by Table 193.50-10(a) of this subpart. Minor modifications may be made to the same standard as the original installation, provided that in no case will a greater departure from the standards of Table 193.50-10(a) of this subpart be permitted than presently exists.

(3) All new equipment and installations must meet the applicable requirements in this subpart for new vessels.