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USCG Documented Vessel

STRAITS OF MACKINAC II

No. 521407Passenger (Inspected)Valid
Data as of · Source: U.S. Coast Guard
Every answer cited & verifiedAll 4 USCG exam modulesReviewed by a former NMC exam writer

Vessel particulars

Official number
521407
Call sign
WDJ4992
Flag
Us
Service
Passenger (Inspected)
Self-propelled
Yes
Propulsion
Diesel Reduction
Hull material
Steel
Year built
1969

Dimensions & tonnage

Length
90 ft
Breadth
27 ft
Depth
8.8 ft
Gross tonnage
89 GT
Net tonnage
64 NT

Documentation

A Certificate of Documentation (COD) is the U.S. Coast Guard’s federal record of a vessel’s nationality and ownership — a national alternative to state titling for eligible vessels. Learn how it differs from state registration in the registration vs documentation guide.

COD status
Valid
Issued
June 20, 2026
Expires
July 31, 2027
Endorsements
Coastwise Unrestricted

Builder

Builder
Blount Marine Corporation
Shipyard
Blount Marine Corporation
Built at
Warren, Ri, United States
Year built
1969

Hailing port

Hailing port
Mackinac Island, Mi, United States
Managing owner (company)
Straits Of Mackinac II Boat LLC
Managing owner location
Naples, Fl

Planning to run this boat as a charter or take paying passengers? Carrying up to six for hire needs an OUPV “six-pack” captain’s license.

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Independent reference tool — not affiliated with, endorsed by, or sponsored by the U.S. Coast Guard or the National Maritime Center. Vessel data is derived from public USCG sources and may lag official records; always verify with the issuing authority.

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Straits Of Mackinac II — USCG Documented Vessel 521407 · CaptainsGround