Mariner of the Seas Spacious Ocean View Balcony Cabins (3B/4B)

Mariner of the Seas has 279 Spacious Ocean View Balcony cabins in categories 3B and 4B on decks 6, 7, 8, 9 and 10. Royal Caribbean's deck plan lists 3B and 4B together, so it doesn't show which of them a particular cabin is; the exact category is confirmed when you book. Each cabin below links to its own page with its deck-plan position.

Class: Balcony
Category: 3B or 4B · Spacious Ocean View Balcony
Cabins: 279
Decks: 6 (70), 7 (68), 8 (65), 9 (54), 10 (22)
Position: 98 forward · 39 midship · 142 aft
Side: 137 port · 142 starboard
Published size: Room 203 sq ft · Balcony 42 sq ft
Deck-plan footprint: 90% to 141% of the ship's average balcony cabin
Occupancy: Up to 3 guests
Quiet cabins: 180 of 279 checked

Cabin positions and sizes are taken from the ship's deck plans.

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3B/4B cabin guide

The 279 3B/4B balcony cabins are spread over decks 6, 7, 8, 9 and 10; Deck 6 has the most (70). By position along the ship, 98 forward · 39 midship · 142 aft. By side, 137 port · 142 starboard.

Midship cabins (14% of this category) sit closest to the ship's pivot point, where motion is gentlest in a swell; forward cabins feel the most.

On the deck plans, 180 of these 279 cabins have no public space directly above or below. 29 sit below public space and 70 sit above public space — potential noise, so check the deck above and below before you book.

Measured on the deck plans, footprints in this category range from 90% to 141% of the ship's average balcony cabin, so the cabin number matters.

Deck 10 is the highest deck with 3B/4B cabins and Deck 6 the lowest.

Best located: midship, no public space above or below

Watch out: public space directly above

Watch out: public space directly below

Largest footprints

Smallest footprints

Photos

Note: These are representative photos of Category 3B staterooms. Individual cabins may vary slightly.

All 279 3B/4B balcony cabins by deck

Deck 6 · 70 cabins Deck 6 plan

Cabin	Position	Side	Size vs avg	Above / below
6214	Forward	Starboard	−2%	Public space below
6216	Forward	Starboard	−2%	Public space below
6218	Forward	Starboard	−2%	Public space below
6220	Forward	Starboard	−2%	Public space below
6222	Forward	Starboard	−2%	Public space below
6224	Forward	Starboard	−2%	Public space below
6226	Forward	Starboard	−2%	Public space below
6228	Forward	Starboard	−2%	Public space below
6230	Forward	Starboard	−2%	Public space below
6232	Forward	Starboard	−2%	Public space below
6234	Forward	Starboard	−2%	Public space below
6236	Forward	Starboard	−2%	Public space below
6238	Forward	Starboard	−7%	Public space below
6240	Forward	Starboard	−4%	Public space below
6246	Forward	Starboard	−4%	Public space below
6330	Midship	Starboard	−9%	Public space below
6332	Midship	Starboard	−4%	Public space below
6334	Midship	Starboard	−4%	Public space below
6336	Midship	Starboard	−4%	Public space below
6338	Midship	Starboard	−4%	Public space below
6340	Midship	Starboard	−4%	Public space below
6342	Midship	Starboard	−4%	Public space below
6344	Midship	Starboard	−4%	Public space below
6346	Aft	Starboard	−4%	Public space below
6348	Aft	Starboard	−4%	Public space below
6350	Aft	Starboard	−4%	Public space below
6352	Aft	Starboard	−4%	Public space below
6354	Aft	Starboard	−4%	Public space below
6356	Aft	Starboard	−4%	Public space below
6358	Aft	Starboard	−4%	Public space below
6360	Aft	Starboard	−8%	Public space below
6366	Aft	Starboard	−4%	Public space below
6368	Aft	Starboard	−4%	Public space below
6370	Aft	Starboard	−4%	Public space below
6372	Aft	Starboard	−4%	Public space below
6378	Aft	Starboard	−4%	Public space below
6514	Forward	Port	Average	Public space below
6516	Forward	Port	Average	Public space below
6518	Forward	Port	Average	Public space below
6520	Forward	Port	Average	Public space below
6522	Forward	Port	Average	Public space below
6524	Forward	Port	Average	Public space below
6526	Forward	Port	Average	Public space below
6528	Forward	Port	Average	Public space below
6530	Forward	Port	Average	Public space below
6532	Forward	Port	−1%	Public space below
6534	Forward	Port	Average	Public space below
6540	Forward	Port	−4%	Public space below
6546	Forward	Port	−4%	Public space below
6630	Midship	Port	−8%	Public space below
6632	Midship	Port	−4%	Public space below
6634	Midship	Port	−4%	Public space below
6636	Midship	Port	−4%	Public space below
6638	Midship	Port	−4%	Public space below
6640	Midship	Port	−4%	Public space below
6642	Midship	Port	−4%	Public space below
6644	Midship	Port	−4%	Public space below
6646	Aft	Port	−4%	Public space below
6648	Aft	Port	−4%	Public space below
6650	Aft	Port	−4%	Public space below
6652	Aft	Port	−4%	Public space below
6654	Aft	Port	−4%	Public space below
6656	Aft	Port	−4%	Public space below
6658	Aft	Port	−4%	Public space below
6660	Aft	Port	−10%	Public space below
6666	Aft	Port	−5%	Public space below
6668	Aft	Port	−5%	Public space below
6670	Aft	Port	−5%	Public space below
6672	Aft	Port	−5%	Public space below
6678	Aft	Port	−5%	Public space below

Deck 7 · 68 cabins Deck 7 plan

Cabin	Position	Side	Size vs avg	Above / below
7214	Forward	Starboard	Average	Quiet
7216	Forward	Starboard	Average	Quiet
7218	Forward	Starboard	Average	Quiet
7220	Forward	Starboard	Average	Quiet
7222	Forward	Starboard	Average	Quiet
7224	Forward	Starboard	Average	Quiet
7226	Forward	Starboard	Average	Quiet
7228	Forward	Starboard	Average	Quiet
7230	Forward	Starboard	Average	Quiet
7232	Forward	Starboard	Average	Quiet
7238	Forward	Starboard	−3%	Quiet
7240	Forward	Starboard	−2%	Quiet
7246	Forward	Starboard	−2%	Quiet
7334	Midship	Starboard	−2%	Quiet
7336	Midship	Starboard	−2%	Quiet
7338	Midship	Starboard	−2%	Quiet
7340	Midship	Starboard	−2%	Quiet
7342	Midship	Starboard	−2%	Quiet
7344	Aft	Starboard	−2%	Quiet
7346	Aft	Starboard	−2%	Quiet
7348	Aft	Starboard	−2%	Quiet
7350	Aft	Starboard	−2%	Quiet
7352	Aft	Starboard	−2%	Quiet
7354	Aft	Starboard	−2%	Quiet
7356	Aft	Starboard	−2%	Quiet
7358	Aft	Starboard	−2%	Quiet
7360	Aft	Starboard	−2%	Quiet
7362	Aft	Starboard	−2%	Quiet
7364	Aft	Starboard	−2%	Quiet
7366	Aft	Starboard	−2%	Quiet
7368	Aft	Starboard	−2%	Quiet
7370	Aft	Starboard	−2%	Quiet
7372	Aft	Starboard	−2%	Quiet
7378	Aft	Starboard	−2%	Quiet
7514	Forward	Port	Average	Quiet
7516	Forward	Port	Average	Quiet
7518	Forward	Port	Average	Quiet
7520	Forward	Port	Average	Quiet
7522	Forward	Port	Average	Quiet
7524	Forward	Port	Average	Quiet
7526	Forward	Port	Average	Quiet
7528	Forward	Port	Average	Quiet
7530	Forward	Port	Average	Quiet
7532	Forward	Port	Average	Quiet
7534	Forward	Port	Average	Quiet
7540	Forward	Port	−2%	Quiet
7546	Forward	Port	−2%	Quiet
7630	Midship	Port	−2%	Quiet
7632	Midship	Port	−2%	Quiet
7634	Midship	Port	−2%	Quiet
7636	Midship	Port	−2%	Quiet
7638	Midship	Port	−2%	Quiet
7640	Midship	Port	−2%	Quiet
7642	Midship	Port	−2%	Quiet
7644	Aft	Port	−2%	Quiet
7646	Aft	Port	−3%	Quiet
7648	Aft	Port	−2%	Quiet
7650	Aft	Port	−2%	Quiet
7652	Aft	Port	−2%	Quiet
7654	Aft	Port	−2%	Quiet
7656	Aft	Port	−2%	Quiet
7658	Aft	Port	−2%	Quiet
7660	Aft	Port	−2%	Quiet
7666	Aft	Port	−2%	Quiet
7668	Aft	Port	−2%	Quiet
7670	Aft	Port	−2%	Quiet
7672	Aft	Port	−2%	Quiet
7678	Aft	Port	−3%	Quiet

Deck 8 · 65 cabins Deck 8 plan

Cabin	Position	Side	Size vs avg	Above / below
8216	Forward	Starboard	+4%	Quiet
8218	Forward	Starboard	+4%	Quiet
8220	Forward	Starboard	+4%	Quiet
8222	Forward	Starboard	+4%	Quiet
8224	Forward	Starboard	+4%	Quiet
8226	Forward	Starboard	+4%	Quiet
8228	Forward	Starboard	+4%	Quiet
8230	Forward	Starboard	+4%	Quiet
8232	Forward	Starboard	+4%	Quiet
8238	Forward	Starboard	Average	Quiet
8240	Forward	Starboard	−2%	Quiet
8246	Forward	Starboard	Average	Quiet
8336	Midship	Starboard	Average	Quiet
8338	Midship	Starboard	Average	Quiet
8340	Midship	Starboard	Average	Quiet
8342	Midship	Starboard	Average	Quiet
8344	Aft	Starboard	Average	Quiet
8346	Aft	Starboard	Average	Quiet
8348	Aft	Starboard	Average	Quiet
8350	Aft	Starboard	Average	Quiet
8352	Aft	Starboard	Average	Quiet
8354	Aft	Starboard	Average	Quiet
8356	Aft	Starboard	Average	Quiet
8358	Aft	Starboard	Average	Quiet
8360	Aft	Starboard	Average	Quiet
8362	Aft	Starboard	Average	Quiet
8364	Aft	Starboard	Average	Quiet
8366	Aft	Starboard	Average	Quiet
8368	Aft	Starboard	Average	Quiet
8370	Aft	Starboard	Average	Quiet
8372	Aft	Starboard	Average	Quiet
8374	Aft	Starboard	Average	Quiet
8376	Aft	Starboard	Average	Quiet
8378	Aft	Starboard	Average	Quiet
8516	Forward	Port	+4%	Quiet
8518	Forward	Port	+4%	Quiet
8520	Forward	Port	+4%	Quiet
8522	Forward	Port	+4%	Quiet
8524	Forward	Port	+4%	Quiet
8526	Forward	Port	+4%	Quiet
8528	Forward	Port	+4%	Quiet
8530	Forward	Port	+4%	Quiet
8532	Forward	Port	+4%	Quiet
8534	Forward	Port	+4%	Quiet
8540	Forward	Port	−3%	Quiet
8546	Forward	Port	Average	Quiet
8638	Midship	Port	Average	Quiet
8640	Midship	Port	Average	Quiet
8642	Midship	Port	Average	Quiet
8644	Aft	Port	Average	Quiet
8646	Aft	Port	Average	Quiet
8648	Aft	Port	Average	Quiet
8650	Aft	Port	Average	Quiet
8652	Aft	Port	Average	Quiet
8654	Aft	Port	Average	Quiet
8656	Aft	Port	Average	Quiet
8658	Aft	Port	Average	Quiet
8664	Aft	Port	Average	Quiet
8666	Aft	Port	Average	Quiet
8668	Aft	Port	Average	Quiet
8670	Aft	Port	Average	Quiet
8672	Aft	Port	Average	Quiet
8674	Aft	Port	Average	Quiet
8676	Aft	Port	Average	Quiet
8678	Aft	Port	Average	Quiet

Deck 9 · 54 cabins Deck 9 plan

Cabin	Position	Side	Size vs avg	Above / below
9220	Forward	Starboard	+5%	Public space above
9222	Forward	Starboard	+5%	Public space above
9224	Forward	Starboard	+5%	Public space above
9226	Forward	Starboard	+5%	Public space above
9228	Forward	Starboard	+5%	Public space above
9230	Forward	Starboard	+5%	Quiet
9232	Forward	Starboard	+5%	Quiet
9338	Midship	Starboard	+5%	Quiet
9340	Midship	Starboard	+5%	Quiet
9342	Aft	Starboard	+5%	Quiet
9344	Aft	Starboard	+5%	Quiet
9346	Aft	Starboard	+5%	Quiet
9348	Aft	Starboard	+5%	Quiet
9350	Aft	Starboard	+5%	Quiet
9352	Aft	Starboard	+5%	Quiet
9354	Aft	Starboard	+5%	Quiet
9356	Aft	Starboard	+5%	Quiet
9358	Aft	Starboard	+40%	Quiet
9360	Aft	Starboard	+4%	Quiet
9362	Aft	Starboard	+4%	Quiet
9364	Aft	Starboard	+4%	Quiet
9366	Aft	Starboard	+4%	Quiet
9368	Aft	Starboard	+4%	Quiet
9370	Aft	Starboard	+4%	Quiet
9372	Aft	Starboard	+4%	Quiet
9374	Aft	Starboard	+4%	Quiet
9376	Aft	Starboard	+4%	Quiet
9520	Forward	Port	+5%	Public space above
9522	Forward	Port	+5%	Public space above
9524	Forward	Port	+5%	Public space above
9526	Forward	Port	+5%	Public space above
9528	Forward	Port	+5%	Public space above
9530	Forward	Port	+12%	Quiet
9532	Forward	Port	+8%	Quiet
9638	Midship	Port	+5%	Quiet
9640	Midship	Port	+5%	Quiet
9642	Aft	Port	+5%	Quiet
9644	Aft	Port	+5%	Quiet
9646	Aft	Port	+5%	Quiet
9648	Aft	Port	+5%	Quiet
9650	Aft	Port	+5%	Quiet
9652	Aft	Port	+5%	Quiet
9654	Aft	Port	+5%	Quiet
9656	Aft	Port	+5%	Quiet
9658	Aft	Port	+41%	Quiet
9660	Aft	Port	+6%	Quiet
9662	Aft	Port	+6%	Quiet
9664	Aft	Port	+6%	Quiet
9666	Aft	Port	+6%	Quiet
9668	Aft	Port	+6%	Quiet
9670	Aft	Port	+6%	Quiet
9672	Aft	Port	+6%	Quiet
9674	Aft	Port	+6%	Quiet
9676	Aft	Port	+6%	Quiet

Deck 10 · 22 cabins Deck 10 plan

Cabin	Position	Side	Size vs avg	Above / below
1230	Forward	Starboard	+24%	Quiet
1232	Forward	Starboard	+24%	Quiet
1234	Forward	Starboard	+24%	Quiet
1360	Aft	Starboard	+27%	Public space above
1362	Aft	Starboard	+25%	Public space above
1364	Aft	Starboard	+25%	Public space above
1366	Aft	Starboard	+25%	Public space above
1368	Aft	Starboard	+25%	Public space above
1370	Aft	Starboard	+25%	Public space above
1372	Aft	Starboard	+25%	Public space above
1374	Aft	Starboard	+25%	Public space above
1530	Forward	Port	+23%	Public space above
1532	Forward	Port	+24%	Public space above
1534	Forward	Port	+24%	Public space above
1660	Aft	Port	+25%	Public space above
1662	Aft	Port	+25%	Public space above
1664	Aft	Port	+25%	Public space above
1666	Aft	Port	+25%	Public space above
1668	Aft	Port	+25%	Public space above
1670	Aft	Port	+25%	Public space above
1672	Aft	Port	+25%	Public space above
1674	Aft	Port	+25%	Public space above