Another idea for fitting in both the octopus and the ship would perhaps be to have most of the ship already enveloped in the octopus.
Terrestrial Globe Tattoo : Black and White
1337tattoos — tattoo by chris stockings, legacy ink submitted...
Jean Le Roux
oldlinesblog: #tattoo by @bertz_tattooing #tattoos #tattooart...
Octopus Tattoo With Tribal Image
Hammerhead shark traditional tattoo
tattoo old school / traditional ink - balloon