<s>
Seabase	B-Device
Delta	I-Device
is	O
a	O
text	O
adventure	O
game	O
by	O
Firebird	O
released	O
in	O
1986	B-Application
for	O
the	O
Amstrad	B-Device
CPC	I-Device
,	O
Commodore	O
64	O
,	O
and	O
ZX	B-Operating_System
Spectrum	I-Operating_System
home	O
computers	O
.	O
</s>
<s>
It	O
is	O
the	O
sequel	O
to	O
Subsunk	B-Application
.	O
</s>
<s>
In	O
Subsunk	B-Application
,	O
the	O
journalist	O
Ed	O
Lines	O
,	O
stranded	O
aboard	O
the	O
wrecked	O
submarine	O
Sea	O
Lion	O
,	O
successfully	O
sent	O
a	O
distress	O
signal	O
to	O
headquarters	O
and	O
now	O
awaits	O
rescue	O
.	O
</s>
<s>
But	O
the	O
message	O
has	O
been	O
intercepted	O
by	O
enemy	O
agents	O
,	O
who	O
arrange	O
for	O
Sea	O
Lion	O
to	O
be	O
towed	O
into	O
Seabase	B-Device
Delta	I-Device
,	O
where	O
she	O
will	O
not	O
be	O
found	O
.	O
</s>
<s>
Like	O
its	O
predecessor	O
,	O
Seabase	B-Device
Delta	I-Device
is	O
a	O
Quilled	B-Application
adventure	O
with	O
simple	O
graphics	O
.	O
</s>
