 Moodys Investors Service, Moodys assigned a Baa3 rating to Boardwalk Pipelines, LPs Boardwalk proposed senior unsecured notes offering. This senior notes offering proactively refinances a February 2021 maturity at one of Boardwalks subsidiaries, maintaining its sound liquidity, commented Pete Speer, Moodys Senior Vice President. The ratings also benefit from Loews Corporations A3 stable sole ownership and ability to provide support. 