The claim was based on the argument that an underwater feature, known as the Lomonosov Ridge, was an extension of its continental territory.

• 莫斯科称在俄罗斯以北北极海域应属于俄罗斯，理由是北冰洋中主要海底地貌--罗蒙诺索夫海岭是俄罗斯北部地区大陆自然延伸的说法。