Apex domains cannot have CNAME records.
Question and response
Question
dig nautilusyachtingclub.com. NS
Answer
nautilusyachtingclub.com. 5 NS ns2.nautilusyachtingclub.com.
nautilusyachtingclub.com. 5 NS ns1.nautilusyachtingclub.com.
Authority
The response has no authority records.
Additional
ns1.nautilusyachtingclub.com. 5 A 86.111.189.219
ns2.nautilusyachtingclub.com. 5 A 15.235.133.248
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0