| aam schip | Jaar | callsign | Mij | mg zender | kg zender | ontvanger | AAT | noodzender |
| Oberon | 1939 | PGLF | KNSM | 533 | E381 | MZ11 | ||
| Oberon | 1965 | PGLE | KNSM | Oceanspan | Oceanspan | CR300 | M | MZ11 |
| Oberon | 1967 | PZAU | KMSN | Oceanspan | Oceanspan | BX925/H3L7U | M700 | Renovas |
| Ocana | 1938 | PGLJ | Shell | 533/386 | 550 | HL7 | 332/33 | RH |
| Oceaan | 1956 | PGLA | Shell | TDE/TAJ | 19 | AR88/HL7 | Marconi Reliance | |
| Oceaan (slbt) | 1950 | Smit | ||||||
| Oceanbuilder-1 | ||||||||
| Odin | Heerema | |||||||
| Oldekerk | PGMH | SMZ219 | SMZ218 | BX925/HL7 | ||||
| Olivia | ||||||||
| Olivia | 1939 | LaC | MZ32 | MZ33 | W3/HL7 | 332/33 | MZ11 | |
| Ommenkerk | 1965 | PGMR | VNS | SMZ219 | SMZ218 | BX925/HL7 | M700 | Renovas |
| Omala | PGMP | |||||||
| Ondina | 1947 | PGMT | Shell | SMZ219 | SMZ218 | HL7/CR300 | ||
| Ondina | 1960 | PGNB | Shell | Globespan | BX925/HL7 | AL27 | Reliance | |
| Ondina | 1965 | PGNC | Shell | SMZ219 | SMZ218 | CR300/HL7 | Marc | |
| Onoba | 1938 | PGMV | Shell | 386 | 550 | HL7 | 332/3 | RH |
| Onoba | 1960 | PGNL | Shell | Globespan | BX925/HL7 | AL27 | Reliance | |
| Oostplein | 1937 | PGNA | 533 | HL7 | T42 | |||
| Oostzee | ||||||||
| Ootmarsum | 1938 | PGNQ | SM Oostzee | E374 | E381 | MZ11 | ||
| Ootmarsum | 1945 | PGNN | SM Oostzee | 3U | ET8023 | AR8506B | ||
| Ophir | 1946 | PGNP | KPM | ET8010 | ET8019 | BC348/HL7 | ||
| Ophir | 1957 | PGNP | KPM | TDE | TDE | AR88/H2L7U | M | MZ11 |
| Oranje | 1939 | PGOF | SMN | STC800 | MZ33 | HL7 | MZ11 | |
| Oranje | PGOU | S1250 | ||||||
| Oranjefontein | 1940/1967 | PGOG | MT250 | Siemens / BC348 | ||||
| Oranje Nassau | Stoomv. my Zeeland | 2kW vonk NSF | 1/2 kW vonk | |||||
| Oranje Nassau | PDE | KNSM | 0.5 kW | Marconi | vonk | |||
| Oranje Nassau | 1957 | KNSM | ET8024A | ET8023 | AR8506B/AR8610 | AR8601 | ET8025/BC375 | |
| Oranje Nassau | 1965 | PGOJ | KNSM | 1233 | 1200 | RHn1/2 | ||
| Oranjestad | 1950 | PGOP | KNSM | MZ1 | MZ2 | BC348/BX925 | Vigilant | MZ11 |
| Oranjestad | 1967 | PGOP | KNSM | MZ32 | MZ33 | BX925/H3L7U | Renovas | |
| Orca (Mixteco) | 3ERY | NOC (tot 1979>McDermott) | ||||||
| Orestes | 1938 | PGOV | KNSM | 381 | E381 | MZ11 | ||
| Orestes | 1950 | PGOV | KNSM | ET8010 | ET8019 | BC348/HL2-7 | M | MZ11 |
| Orinoco | 1975 | PGOZ | Smit | MT600/B | BC375 | E566/1185 | ||
| Orion | 1938 | PGPA | KNSM | 381 | 2801 | RH | ||
| Oro Baai | 1944 | PGPG | KPM | AWA | ||||
| Oscilla | 1939 | Shell | MZ32 | MZ33 | HL7 | M700 | MZ11 | |
| Osiris | 1960 | PGPL | KNSM | TDE | TDE | BX925 | Lifeguard | Renovas |
| Ossendrecht | 1977 | PGPM | Van Ommeren | MT250 | MT250 | BX925 | Renovas | |
| Ottawa | ||||||||
| Ouwerkerk | 1960 | PGPR | VNS | SMZ219 | SMZ218 | BX925/HL7 | M700 | Renovas |
| Overijssel | 1970 | PGPW | KRL | ET8024A | ET8023 | BX925 | AR8601 | ET8025 |
| Ovula | 1938 | PGPZ | Shell | 386 | 550 | HL7 | 332/33 | MZ11 |
| Ovula | 1950 | PGPZ | Shell | SMZ219 | SMZ218 | CR300/HL7 | M700 | MZ11 |