Modifiers matching installation:

• fixed,
• nuclear,
• permanent,
• down,
• controlled,
• incidental,
• covered,
• maritime,
• large,
• commercial,
• recreational,
• typical,
• impressive,
• economic,
• electrical,
• defensive,
• military,
• larger,
• linear,
• sensitive,
• vital,
• off,
• ancillary,
• complicated,
• modern,
• thick,
• important,
• complex,
• special,
• base,
• industrial,
• dynamic,
• moving,
• outdoor,
• vulnerable,
• physical,
• simple,
• size,
• architectural,
• current,
• new,
• unique,
• inshore,
• complete,
• decorative,
• hazardous,
• tubular,
• unusual,
• closed,
• high,
• electric,
• basic,
• appropriate,
• key,
• minor,
• horizontal,
• inside,
• primary,
• floating,
• aquatic,
• smaller,
• convenient,
• mechanical,
• functional,
• remote,
• self,
• environmental,
• spatial,
• metallic,
• advanced,
• coastal,
• concrete,
• unattended,
• auxiliary,
• difficult,
• essential,
• modular,
• small,
• agricultural,
• light,
• peripheral,
• unmanned,
• civilian,
• strategic,
• vertical,
• radio,
• semipermanent,
• wet,
• underwater,
• alert,
• marine,
• movable,
• single,
• big,
• underground,
• necessary,
• major,
• scientific,
• sanitary,
• occupied,
• expensive,
• real,
• residential,
• audiovisual,
• particular,
• specialized,
• corporate,
• overhead,
• structural,
• quick,
• stable,
• interactive,
• stationary,
• isolated,
• limited,
• outside,
• fighting,
• internal,
• chemical,
• surrounding,
• proper,
• medium,
• shared,
• professional,
• centralized,
• productive,
• additional,
• portable,
• mobile,
• institutional,
• central,
• exposed,
• official,
• technical,
• interior,
• domestic,
• communal,
• public,
• indoor,
• sloping,
• exterior,
• individual,
• external,
• national,
• critical,
• social,
• subsurface,
• electronic,
• federal,
• temporary,
• supporting,
• static,
• academic,
• secure,
• avionic,
• multiple,
• harsh,
• sized,
• technological,
• protective,
• hydraulic,
• nearby,

Simple categories matching underwater:

• object,
• ordnance,
• structure,
• formation,
• appendage,
• substance,
• means,
• creature,
• feature,
• surface,
• job,
• disturbance,
• facility,
• heritage,
• shape,
• instrumentation,
• location,
• metal,
• information,
• sport,
• equipment,
• projection,
• cave,
• explosive,
• animal,
• prop,
• connection,
• prey,
• predator,
• grass,
• organism,
• weaponry,
• service,
• vehicle,
• mound,
• installation,
• weapon,
• inhabitant,
• obstruction,
• mammal,
• vessel,
• part,
• killer,
• operations,
• construction,
• operation,
• artifact,
• work,
• resource,
• shock,
• body,
• life,
• duty,
• craft,
• plant,
• happening,
• worker,
• mission,
• activity,
• use,
• article,
• wonder,
• unit,
• missile,
• munition,
• system,
• gear,
• world,
• experience,
• material,
• event,
• function,
• substrate,
• native,
• cetacean,
• task,
• area,