Where OCEAN's settings differ from the Bitcoin Core defaults, the modified setting and rationale are shown below.
-blockmaxweight=<n> (default: 3996000, OCEAN: 3985000)
Set maximum BIP141 block weight
(Note: Settings for blockmaxsize and blockmaxweight reserve a small amount of template space for our potentially large coinbase payout transactions.)
For more information on alternate block templates, see this article.