Declension table of ?samudratva

Neuter	Singular	Dual	Plural
Nominative	samudratvam	samudratve	samudratvāni
Vocative	samudratva	samudratve	samudratvāni
Accusative	samudratvam	samudratve	samudratvāni
Instrumental	samudratvena	samudratvābhyām	samudratvaiḥ
Dative	samudratvāya	samudratvābhyām	samudratvebhyaḥ
Ablative	samudratvāt	samudratvābhyām	samudratvebhyaḥ
Genitive	samudratvasya	samudratvayoḥ	samudratvānām
Locative	samudratve	samudratvayoḥ	samudratveṣu

Compound samudratva -

Adverb -samudratvam -samudratvāt