蝦夷方言藻汐草

The recorded form ends in ム. Tamura gives sitteksam for a coastal area; the companion transcription also proposes sitteksam. This supports removing the added final -a in the previous place-name comparison. The broader coastal sense leaves its relationship to the Japanese 湾 qualified. Hirayama reads the Japanese annotation わだ, while the current transcription has わど; the original field is preserved. The three corpus matches concern coastal areas, including two entries in the modern NINJAL edition.