What this record means
The record shows that “SEA” is a cancelled registration – the Principal Register entry (Reg. No. 2247293) was cancelled on March 4 2006 because the registrant, Price Waterhouse LLP, did not file an acceptable Section 8 declaration, and the history contains no later filings. The mark covered only one class, 035, for “business management consulting services in connection with implementation of enterprise‑wide systems, namely, strategies, organizational capabilities and process and technology of business,” so a similar name used in that consulting context would present the closest record‑based concern. The record does not give the owner control over every use of the word “SEA” in other fields. The prosecution history shows normal examination steps, publication for opposition in November 1998, registration in May 1999, and the final cancellation in 2006; no oppositions or other enforcement actions appear. I'd treat this as a moderate concern if you plan a consulting service similar to the listed description.
Informational only - not legal advice.