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The Thunderer is an ironborn longship owned by House Drumm. It is captained by Lord Dunstan Drumm.
A Feast for Crows
Lord Captain Victarion Greyjoy spots the Thunderer at anchor in Nagga's Cradle alongside Lord Baelor Blacktyde's Nightflyer.
- ↑ 1.0 1.1 A Feast for Crows, Chapter 18, The Iron Captain.