SHIELD
Gold and Dark Blue represent the Navy; Celeste (Light Blue) and arched chief symbolize world-wide capability. The single nebula rompu rerpresnets the submarine rescue chamber developed and tested by Vice Admiral Momsen and since used by the Navy in submarine rescue operations. The upper portion of the nebula is freed and rising from the main body to convey the function of the rescue chamber and Momsen Lung, devices conceived and developed by VADM Momsen to save trapped mariners from damaged and sunken submarines. The demi-trident symbolizes advanced weaponry and sea power and its tines recall the attack pattern employed by VADM Momsen against convoys of Japanese shipping during World War II. The dolphins, derived from the submariners' badge and traditional friends of the sailor, refer respectively to the diving community and the individual submariners whose safety was the main concern of VADM Momsen's own diving skills and the equipment testing he conducted at grave personal risk. Gold denotes achievement and excellence.
CREST
The stylized Navy Cross refers to that awarded to VADM Momsen for his heroism as commander of an attack group of submarines against Japan's forces in the East China Sea during World War II. The blue and gold riband recalls the Distinguished Service Medal he received among many awards for his wartime service; the two gold stars refer to the Legion of Merit. The sword denotes readiness and the ability to fight and the cutlass represents the enlisted sailor and submariner. Together, in the form of the letter ''V,'' they represent VADM Momsen's combat awards. The wreath, symbol of honor and achievement, recalls the many and various decorations awarded to him during his distinguished career. The scarlet doubling on the riband symbolizes courage and sacrifice and refers to Navy support to Marine Corps forces. Gold denotes excellence.