diff --git a/include/nuke.h b/include/nuke.h
index 27c3215a..4c2eb0cc 100644
--- a/include/nuke.h
+++ b/include/nuke.h
@@ -44,6 +44,13 @@ struct nukstr {
     short nuk_uid;
     coord nuk_x, nuk_y;		/* current loc of device */
     signed char nuk_type;	/* index in plchr[] */
+    signed char nuk_effic;	/* unused, always 100% */
+    signed char nuk_mobil;	/* unused, always 0 */
+    short nuk_tech;		/* nuke's tech level */
+    char nuk_stockpile;		/* group membership, unused, always ' ' */
+    coord nuk_opx, nuk_opy;	/* Op sector coords, unused */
+    short nuk_mission;		/* mission code, unused */
+    short nuk_radius;		/* mission radius, unused */
     /* end of part matching struct genitem */
     short nuk_ship;		/* currently aboard ship (unused) */
     short nuk_plane;		/* currently aboard plane */
diff --git a/src/lib/commands/buil.c b/src/lib/commands/buil.c
index 95a8917c..8a29a2d7 100644
--- a/src/lib/commands/buil.c
+++ b/src/lib/commands/buil.c
@@ -54,18 +54,15 @@
 #include "commands.h"
 
 static int build_nuke(struct sctstr *sp,
-		      struct nchrstr *np, short *vec);
+		      struct nchrstr *np, short *vec, int tlev);
 static int build_ship(struct sctstr *sp,
-		      struct mchrstr *mp, short *vec,
-		      int tlev);
+		      struct mchrstr *mp, short *vec, int tlev);
 static int build_land(struct sctstr *sp,
-		      struct lchrstr *lp, short *vec,
-		      int tlev);
+		      struct lchrstr *lp, short *vec, int tlev);
 static int build_bridge(struct sctstr *sp, short *vec);
 static int build_tower(struct sctstr *sp, short *vec);
 static int build_plane(struct sctstr *sp,
-		       struct plchrstr *pp, short *vec,
-		       int tlev);
+		       struct plchrstr *pp, short *vec, int tlev);
 static int build_can_afford(double, char *);
 
 /*
@@ -267,7 +264,7 @@ buil(void)
 		built = build_tower(&sect, sect.sct_item);
 		break;
 	    case 'n':
-		built = build_nuke(&sect, np, sect.sct_item);
+		built = build_nuke(&sect, np, sect.sct_item, tlev);
 		break;
 	    case 'p':
 		built = build_plane(&sect, pp, sect.sct_item, tlev);
@@ -289,8 +286,7 @@ buil(void)
 }
 
 static int
-build_ship(struct sctstr *sp, struct mchrstr *mp,
-	   short *vec, int tlev)
+build_ship(struct sctstr *sp, struct mchrstr *mp, short *vec, int tlev)
 {
     struct shpstr ship;
     struct nstr_item nstr;
@@ -403,8 +399,7 @@ build_ship(struct sctstr *sp, struct mchrstr *mp,
 }
 
 static int
-build_land(struct sctstr *sp, struct lchrstr *lp,
-	   short *vec, int tlev)
+build_land(struct sctstr *sp, struct lchrstr *lp, short *vec, int tlev)
 {
     struct lndstr land;
     struct nstr_item nstr;
@@ -639,7 +634,7 @@ build_bridge(struct sctstr *sp, short *vec)
 }
 
 static int
-build_nuke(struct sctstr *sp, struct nchrstr *np, short *vec)
+build_nuke(struct sctstr *sp, struct nchrstr *np, short *vec, int tlev)
 {
     struct nukstr nuke;
     struct nstr_item nstr;
@@ -699,8 +694,11 @@ build_nuke(struct sctstr *sp, struct nchrstr *np, short *vec)
     nuke.nuk_y = sp->sct_y;
     nuke.nuk_own = sp->sct_own;
     nuke.nuk_type = np - nchr;
+    nuke.nuk_effic = 100;
+    nuke.nuk_stockpile = ' ';
     nuke.nuk_ship = nuke.nuk_plane = nuke.nuk_land = -1;
     nuke.nuk_uid = nstr.cur;
+    nuke.nuk_tech = tlev;
 
     vec[I_HCM] -= np->n_hcm;
     vec[I_LCM] -= np->n_lcm;
@@ -716,8 +714,7 @@ build_nuke(struct sctstr *sp, struct nchrstr *np, short *vec)
 }
 
 static int
-build_plane(struct sctstr *sp, struct plchrstr *pp,
-	    short *vec, int tlev)
+build_plane(struct sctstr *sp, struct plchrstr *pp, short *vec, int tlev)
 {
     struct plnstr plane;
     struct nstr_item nstr;
diff --git a/src/lib/commands/tran.c b/src/lib/commands/tran.c
index 3434e13f..d2ff1471 100644
--- a/src/lib/commands/tran.c
+++ b/src/lib/commands/tran.c
@@ -133,6 +133,7 @@ tran_nuke(void)
 	/* TODO apply dam */
 	nuke.nuk_x = dstx;
 	nuke.nuk_y = dsty;
+	nuke.nuk_mission = 0;
 	putnuke(nuke.nuk_uid, &nuke);
     }
     if (mcost > 0)
diff --git a/src/lib/global/nsc.c b/src/lib/global/nsc.c
index 674acfcc..637119a3 100644
--- a/src/lib/global/nsc.c
+++ b/src/lib/global/nsc.c
@@ -380,11 +380,7 @@ struct castr lchr_ca[] = {
 };
 
 struct castr nuke_ca[] = {
-    {NSC_SHORT, 0, 0, fldoff(nukstr, nuk_uid), "uid", EF_NUKE},
-    {NSC_NATID, 0, 0, fldoff(nukstr, nuk_own), "owner", EF_NATION},
-    {NSC_XCOORD, 0, 0, fldoff(nukstr, nuk_x), "xloc", EF_BAD},
-    {NSC_YCOORD, 0, 0, fldoff(nukstr, nuk_y), "yloc", EF_BAD},
-    {NSC_TYPEID, 0, 0, fldoff(nukstr, nuk_type), "type", EF_NUKE_CHR},
+    NSC_GENITEM(EF_NUKE, EF_NUKE_CHR),
     {NSC_SHORT, 0, 0, fldoff(nukstr, nuk_plane), "plane", EF_BAD},
     {NSC_TIME, NSC_EXTRA, 0, fldoff(nukstr, nuk_timestamp), "timestamp",
      EF_BAD},
diff --git a/src/lib/subs/trdsub.c b/src/lib/subs/trdsub.c
index 3d9f909a..bb2c3471 100644
--- a/src/lib/subs/trdsub.c
+++ b/src/lib/subs/trdsub.c
@@ -114,8 +114,8 @@ trade_desc(struct trdstr *tp, union trdgenstr *tgp)
     case EF_NUKE:
 	np = &tgp->nuk;
 	tp->trd_owner = np->nuk_own;
-	pr("(%3d)  %s #%d",
-	   tp->trd_owner,
+	pr("(%3d)  tech %d %d%% %s #%d",
+	   tp->trd_owner, np->nuk_tech, np->nuk_effic,
 	   nchr[(int)np->nuk_type].n_name, tp->trd_unitid);
 	break;
     case EF_SHIP: