"IBERIAN Abyssal","41 30'N - 14 00'W","5.08","11-14","* = Plain"
"Plain"," "," ","103"," "
"______________________","____________________","________","__________","____________________________"
"ICELAND Basin","58 00'N - 28 00'W","5.04","11-14","* (September 1983)"
" ","to"," "," "," "
" ","61 30'N - 16 30'W"," "," "," "
"______________________","____________________","________","__________","____________________________"
"ICELAND-FAEROE Rise","64 15'N - 12 15'W","5.04","11","* = FAROE-ICELAND Ridge"
" ","to"," "," "," "
" ","62 30'N - 8 00'W"," "," "," "
"______________________","____________________","________","__________","____________________________"
"ICELANDIC Plateau","68 00'N - 12 30'W","5.04"," ","* = ICELAND Plateau"
" ","to","5.17"," "," "
" ","69 30'N - 12 15'W"," "," "," "
"______________________","____________________","________","__________","____________________________"
"ICELAND :"," "," "," "," "
"see GREENLAND-ICELAND"," "," "," "," "
"Rise"," "," "," "," "
"______________________","____________________","________","__________","____________________________"
"IGNACIO Canyon","25 30'N - 109 30'W"," ","802","*"
"______________________","____________________","________","__________","____________________________"
"IIZUKA Seamount","42 21'N - 131 56'W"," ","50-801","*"
"______________________","____________________","________","__________","____________________________"
"IMARSSUAK Channel","57 00'N - 43 00'W","5.04"," ","* = Seachannel"
" ","60 00'N - 37 00'W"," "," "," "
"______________________","____________________","________","__________","____________________________"
"IMPERIEUSE Reef","17 37'S - 118 58'E"," ","71"," "
"______________________","____________________","________","__________","____________________________"
"INDIAMAN :"," "," "," "," "
"see EAST INDIAMAN"," "," "," "," "
"Ridge"," "," "," "," "
"______________________","____________________","________","__________","____________________________"
"INDIANAPOLIS","19 38'N - 156 42'W"," ","809","*"
"Seamount"," "," "," "," "
"______________________","____________________","________","__________","____________________________"
"INDIAN : see"," "," "," "," "
"CENTRAL INDIAN",""," "," "," "
"Ridge, MID-INDIAN"," "," "," "," "
"OCEAN Basin,"," "," "," "," "
"SOUTHEAST INDIAN"," "," "," "," "
"Ridge, SOUTHWEST",""," "," "," "
"INDIAN Ridge, and","","","",""
"SOUTH INDIAN","","","",""
"Abyssal Plain.","","","",""
"______________________","____________________","________","__________","____________________________"
"INDISPENSABLE Reefs","12 45'S - 160 25'E","5.10"," "," "
"______________________","____________________","________","__________","____________________________"
"INDOMED Fracture","42 30'S - 45 30'E","5.09","70-72","*"
"Zone","to","","",""
"","35 00'S - 48 00'E "," "," "," "
"______________________","____________________","________","__________","____________________________"
"INDUS Canyon :"," "," "," "," "
"see THE SWATCH"," "," "," "," "
"______________________","____________________","________","__________","____________________________"
"INDUS Fan","23 00'N - 66 00'E","5.05","705","*"
" ","16 00'N - 64 00'E",""," ","GEBCO-SCGN/7"
"______________________","____________________","________","__________","____________________________"
"INGOYDJUPET","71 25'N - 22 35'E"," ","100","Hole"
"______________________","____________________","________","__________","____________________________"
"INSTITUTA","52 00'N - 149 30'E","5.02","512","* = I.O. Rise"
"OKEANOLOGII Rise"," "," "," "," "
"______________________","____________________","________","__________","____________________________"
"INVESTIGATOR Bank","8 30'N - 73 17'E"," ","703-706","*"
" "," "," ","707"," "
"______________________","____________________","________","__________","____________________________"
"INVESTIGATOR Ridge","4 30'S - 98 15'E","5.09","708","*"
" ","to"," "," "," "
" ","17 15'S - 99 10'E"," "," "," "
"______________________","____________________","________","__________","____________________________"
"INVISIBLE Bank","11 10'N - 93 28'E"," ","706","*"
"______________________","____________________","________","__________","____________________________"
"IONIAN Basin","35 45'N - 18 00'E","5.05","301-302","*"
" "," "," "," ","GEBCO-SCGN/7"
"______________________","____________________","________","__________","____________________________"
"IRMINGER Basin","61 00'N - 36 00'W ","5.04","11-14"," "
"______________________","____________________","________","__________","____________________________"
"IRONWOOD Seamount","10 40'N - 159 57'W"," ","51-617","*"
" "," "," ","809"," "
"______________________","____________________","________","__________","____________________________"
"IRVING Seamount","32 00'N - 28 00'W"," ","11-14","*"
"______________________","____________________","________","__________","____________________________"
"ISAKOV Seamount","31 40'N - 151 05'E","5.06"," ","*"
"______________________","____________________","________","__________","____________________________"
"ISELIN Bank","72 45'S - 177 30'W","5.14"," ","*"
" "," ","5.18"," "," "
"______________________","____________________","________","__________","____________________________"
"ISENGARD Ridge","52 25'N - 21 00'W"," ","102"," "
"______________________","____________________","________","__________","____________________________"
"ISLAS ORCADAS","55 00'S - 5 00'E","5.16"," "," "
"Fracture Zone","to","","",""
"","53 30'S - 3 00'E "," "," "," "
"______________________","____________________","________","__________","____________________________"
"ISLAS ORCADAS Rise","51 00'S - 26 20'W","5.16","21"," "
"______________________","____________________","________","__________","____________________________"
"IVERSEN :"," "," "," "," "
"see THOR IVERSEN"," "," "," "," "
"Bank"," "," "," "," "
"______________________","____________________","________","__________","____________________________"
"IWABUCHI Seamount","42 04'N - 132 44'W"," ","50-501","*"
"______________________","____________________","________","__________","____________________________"
"IWAKI Seamount","36 55'N - 144 55'E"," ","511"," "
"______________________","____________________","________","__________","____________________________"
"IZU-OGASAWARA Rise","32 00'N - 143 30'E","5.06"," "," "
"______________________","____________________","________","__________","____________________________"
"IZU-OGASAWARA Trench","32 00'N - 142 10'E","5.06","510","* = IZU Trench"
"______________________","____________________","________","__________","____________________________"